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75383 BC (1923 Isu Era)
- During the War of Unification, Consus, a scientist of the Isu, created the first Shroud of Eden to treat casualties of the war.
75145 (2161 Isu Era)
- The Isu High Council ordered the creation of a new workforce under the supervision of the Father of Understanding Yaldabaoth, the Mother of Wisdom Saklas, and the Sacred Voice Samael.
- Project Anthropos took place in Eden under direction of Isu scientist Phanes and with the approval of the Isu Authority in Eden, in which the Isu created the human race as slaves from a pre-existing species. The humans were made to be susceptible to the powers of the adamant-based Apples of Eden.
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- The Isu Poseidon took control over the city of Atlantis from his son Atlas, and let Atlas and his other sons serve as the Archons of Atlantis.
- The Isu Hades abducted the Isu Persephone and forced her to become his wife, with the consent of his brother Zeus. He imprisoned Persephone in an area of the Underworld that she reshaped as Elysium, which Hades allowed her to rule alongside her friend Hekate.
- The Sister Realms were formed between Atlantis, ruled by Poseidon, the Underworld, ruled by Hades, and Elysium, ruled by Persephone.
75083 (2223 Isu Era)
- Circa 2223 Isu Era, Juno recovered the prototype Shroud of Eden which housed the consciousness of the scientist Consus.
- Poseidon granted Aita and Juno access to Atlantis, where they secretly started the Olympos Project, in which they experimented on humans and created monstrosities. Poseidon banished them from the city back to Feyan and outlawed human experimentation in Atlantis.
- A summit was held by the Sister Realms through a delegation of Atlantean embassies regarding the findings of Atlantis' Solar Dynamics Observatory and the threat of solar instability. Hades was the only leader to attend, but embraced the prospect of annihilation.
- Poseidon, on the advice of his dikastes Aletheia, destroyed the city of Atlantis due to recurring upheaval and friction between its Isu and human populations, by sinking it into the ocean.
75010 BC (2296 Isu Era)
- Adam and Eve, two human slaves, escaped from the Isu city Eden with an Apple of Eden.
- Humanity rose up in rebellion against the Isu, starting a ten-year long war. The Isu Saturn was one of the first victims of the conflict.
- The Father of Understanding Jupiter, the Mother of Wisdom Juno and the Sacred Voice Minerva retreated to the Grand Temple to find a solution from the impending solar flare, ultimately trying six non-successful options.
- Odin imprisoned Fenrir, the son of Loki and Aletheia, after it was calculated Fenrir would kill Odin during the impending catastrophe.
- Baldr, the son of Odin, was fatally poisoned with mistletoe by Loki in retaliation for the imprisonment of Fenrir.
- Aita volunteered as a test subject in an experiment to transfer Isu consciousness into human bodies, though his mind swiftly deteriorated.
- Juno developed a seventh solution to escape annihilation, a serum that would allow the Isu to be reborn as humans. Due to worries concerning the pollution of the human genome, the solution was abandoned by Jupiter and Minerva and the serum was locked away.
- With Juno's aid, Odin stole the serum of the seventh solution in order to survive the impending catastrophe. Using the serum, Juno secretly added samples of Aita's genetic code into the human DNA allowing him to be reborn in humans as Sages, after which she agreed to end his suffering.
- Juno secretly tampered with the Eye built by Minerva to prevent humanity from inheriting the Earth. After her treachery and role in Odin's theft of the serum was discovered, the High Council stripped her of her title Minerva and Jupiter digitally imprisoned her consciousness inside the Grand Temple.
- After being seriously injured, Loki helped Aletheia upload her consciousness in the Staff of Hermes Trismegistus, hoping for the two of them to reunite after the impending catastrophe.
75000 BC (2306 Isu Era)
- Minerva made preparations for another solution involving the global aurora borealis device to be tried during the next solar cycle, hoping that it would be successful without Juno's influence.
- A solar flare struck the Earth, exterminating most of the Earth's population; less than ten thousand humans, and far fewer members of the Isu, survived the catastrophe.
- As the Great Catastrophe struck the Earth, Odin, Tyr, Thor, Freyja, Idun, Frey, Sif, Heimdall, and another of his trusted advisors used the serum to upload their DNA into the Yggdrasil device and be reborn as humans in a future generation, before meeting their inevitable doom. Loki killed one of the Isu before they could leave the chamber and secretly used the serum to be reborn as well.
- In the wake of the Great Catastrophe, humanity and the Isu started working together to rebuild civilization. The Isu influenced the early stages of human civilization and would subsequently come to be revered as gods by the humans.
- Abel, the son of Adam and Eve, was killed by his brother Cain so that Cain could contain his Apple of Eden. Cain was later believed to have been the first precursor to the Knights Templar.
- Perseus, an Isu-human hybrid, used a Sword of Eden to kill Ketos, after he had killed a woman named Medusa who had been turned into the Writhing Dread by an Isu artifact.
- Herakles, an Isu-human hybrid, performed the Twelve Labours as penance for the murder of his wife and children in an episode of madness.
- Theseus, a legendary king of Athens aided by Isu technology, slayed the Minotaur in the labyrinth below Knossos Palace in Krete.
16th-13th century BC
- Moses used the powers of a Staff of Eden to free the Israelites from Egyptian rule and to split the Red Sea during their escape.
14th century BC
- Jason and the Argonauts went on a quest to find an artifact called the Golden Fleece, which was one of the Shrouds of Eden.
- Pharaoh Akhenaten introduced a monotheistic religion in Egypt surrounding his Apple of Eden, which he and his wife Nefertiti believed to be Aten, the disc of the Sun.
- The Order of the Ancients was founded by Pharaoh Smenkhkare, with the goal of obtaining knowledge and artifacts previously possessed by the Isu. The group would later develop into the Order of the Knights Templar.
- Pharaoh Tutankhamun restored the religion of the Egyptian gods discarded by his father Akhenaten, and passed his father's Apple of Eden to the priests of Amun to maintain order and justice for the Egyptian people.
13th century BC
- The Trojan War started due to an Apple of Eden, later believed to have been caused by the Isu Eris. The war saw the rise and fall of many famous heroes, including Achilles and Paris. Greek commander Agamemnon would later be revered by the Cult of Kosmos as a "servant of Kosmos".
- The Battle of Kadesh was fought between the Hittie Empire under Muwatalli II and the forces of Pharaoh Ramesses II.
- The Siege of Dapur took place, with Pharaoh Ramesses II besieging the Syrian city of Dapur held by the Hittie Empire. Ramesses, guided by the priests of Amun in possession of an Apple of Eden, emerged victorious.
11th century BC
- David, who went on to become King of Israel, used the power of a Shroud of Eden to aid him in combat against the giant Philistine warrior Goliath.
10th-6th century BC
- An ancient city in Rajasthan, India became irradiated by the powers of a Piece of Eden, though it was later believed to have been caused by an atomic blast.
8th century BC
- Shabataka started his reign as Pharaoh of Egypt. During his reign, he was in possession of a Staff of Eden.
6th century BC
- September: Darius I claimed the throne of Persia from the usurper Bardiya with aid from the Order of the Ancients.
- King Liao of Wu was killed by Zhuan Zhu, who would later be rememberd as one of the "Five Great Assassins" by Sima Qian.
5th century BC
- Pythagoras, a Greek scholar, established the religious movement of Pythagoreanism, otherwise known as the Cult of Hermes.
- Pythagoras and his assistant Kyros of Zarax met the Isu Hermes Trismegistus in a remote desert and was enthrusted with the Staff of Hermes Trismegistus, an ancient artifact which would prolong his life.
- Guided by Pythagoras, Kyros of Zarax travelled to the Abandoned Temple of Aphrodite where he saw visions of the Isu Aphrodite, and acquired an Apple of Eden.
- Kyros of Zarax won a race against Atalanta, daughter of King Iasius of Arkadia, using the Apple of Eden, winning her hand in marriage.
- The Cult of Kosmos was formed after a number of disillusioned followers of the Cult of Hermes decided to form their own splinter-group. The Cult of Kosmos shifted its goal toward taking over the Greek world.
- The Battle of Thermopylae was fought between the Persian Empire led by Xerxes I and the resisting forces of Greece led by King Leonidas I of Sparta. Leonidas and his Spartan army perished during the fight.
- August 4: King Xerxes I of Persia, an ally of the Order of the Ancients, was killed by Darius – who would later be considered one of the earliest Assassins – during an ambush by his co-conspirators; this assassination became the first recorded use of the Hidden Blade.
- Darius planned to assassinate Xerxes' successor Artaxerxes out of fear he would fall under the influence of the Order of the Ancients, but was stopped by his ally Amorges. Amorges and the rest of the co-conspirators subsequently joined the Ancients to bring peace to Persia.
- The Order of the Ancients planned to assassinate King Artaxerxes after he refused to fall under the Ancients' sway and framed Darius for the attempt; however, the assassination failed, merely leaving Artaxerxes blind and on the run.
- Myrrine, daughter of King Leonidas I of Sparta, gave her daughter Kassandra the Isu artifact her father possessed, which would come to be known as the Spear of Leonidas.
- The Cult of Kosmos influenced the Oracle of Delphi to prophesize that the grandson of King Leonidas, Alexios, would bring about the fall of Sparta. After Alexios was thrown of Mount Taygetos, and his sister Kassandra was presumed dead, the Cult kidnapped Alexios to raise as their weapon known as "Deimos".
- Alexios, now known as Deimos, gained more influence within the Cult of Kosmos and leadership slowly shifted towards him. Aspasia, lover of Athenian leader Perikles and the Cult's leader, became disillusioned with the Cult and started devising ways to bring them down.
- The Peloponnesian War started between the Greek states of Athens and Sparta, secretly orchestrating by the Cult of Kosmos, which was influencing the war from both sides to take control of the Greek world.
- The island of Kephallonia was freed from the tyrannical rule of the crime lord known as the "Cyclops" by the misthios Kassandra.
- The misthios Kassandra accepted a contract from the Cultist of Kosmos Elpenor to kill the Spartan general Nikolaos. After helping the Spartans win the Battle of Megara, she chose to spare her father despite attempting to kill her as a child.
- Kassandra killed the Cultist of Kosmos Elpenor for manipulating her, and discovered the existence of the Cult of Kosmos.
- The Cult of Kosmos held a meeting in the Sanctuary of Kosmos beneath the Sanctuary of Delphi. Kassandra secretly attended and discovered that her brother lived and was now known as Deimos, secret weapon of the Cult, through a shared memory displayed by an artifact known as the Pyramid.
- May: Kassandra relocated to Athens with the help of Herodotos, and became acquianted with Perikles, Sokrates, Alkibiades and Aspasia, unaware of the latter's Cultist affiliations.
- Kassandra started a search for her mother Myrrine, hoping to reunite her family and find out more about her family's lineage that the Cult of Kosmos was interested in.
- Through her travels through Greece, Kassandra dismantled the Cult of Kosmos' hierarchy and influence over the states of Athens and Sparta by killing their high-ranking leaders.
- Kassandra took down the Monger, a Cultist who had taken over the city of Korinth. During the attempt, she met and allied herself with the Spartan Brasidas.
- Darius and his son Natakas fled to Makedonia while being pursued by the Order of the Ancients, where they came in contact with the misthios Kassandra.
- Combining their forces, Kassandra, Darius and Natakas managed to take down Pactyas, Darius' former friend and leader of the Order of Hunters within the Order of the Ancients.
- Kassandra returned to Athens in the midst of the plague. She tried to find her friend Phoibe who was out on an errand by Aspasia, but she was killed by the Cult of Kosmos.
- Athenian leader Perikles was abducted by the Cult of Kosmos and executed by Alexios. Perikles' rival, the Cultist Kleon, became the new leader of Athens.
- Kassandra smuggled Perikles' partner Aspasia out of Athens to escape the Cult of Kosmos, with aid from Sokrates and Hippokrates.
- Kassandra reunited with her mother on Naxos Island after a 17-year separation, using information she received from Aspasia. Alongside Myrrine, she helped stop the threat Paros Island imposed on Naxos and killed the Cultist Silanos.
- Myrrine and Kassandra relocated to their former home in Sparta and reintegrated themselves into Spartan society.
- The Olympic Games of 428 BC took place. Kassandra represented Sparta as its champion after the death of Testikles and won, allowing her to get close to the Pankration judge and Cultist Kallias and kill him.
- Kassandra conquered Boeotia for Sparta, dispatching its four champions Drakon, Deianeira, Aristaios and Nesaia in the process.
- Pausanias, King of Sparta alongside Archidamos, was accused of being a puppet king and member of the Cult of Kosmos by Kassandra. In the aftermath, Pausanias was killed by Kassandra.
- Kassandra travelled to Thera and discovered the Gateway to the Lost City, the entrance to the ancient Isu city of Atlantis, where she met her biological father, Pythagoras. Through him, she started a search for the ancient Atlantis artifacts that would open the Gateway.
- Summer: The Battle of Pylos was fought between Athens and Sparta. The fight resulted in an Athenian victory, and Kassandra was taken captive when she lost in battle to Alexios.
- During her imprisonment, Kassandra learned of Kleon's affiliations with the Cult of Kosmos and conversed with her brother Alexios. She escaped with the help of Barnabas and Sokrates.
- Kassandra formed a resistance to Kleon's rule of Athens comprised of Barnabas, Sokrates, Hippokrates, Alkibiades, Herodotos and Aristophanes, which became the Periklean Circle.
- Kassandra defeated the Writhing Dread, Minotaur and Cyclops and passed the Sphinx's riddle to acquire all four Atlantis artifacts, with which she activated the Gateway to the Lost City.
- Instructed by a message from the Isu Aletheia, Pythagoras passed the Staff of Hermes Trismegistus on to Kassandra. Without the artifact's powers, Pythagoras passed away.
- Kassandra reunited with Darius and Natakas in Dyme, where they discovered that Phila, leader of the Order of the Storm of the Order of the Ancients, put up a naval blockade around Achaia.
- Kassandra and Darius confronted Phila, which resulted in the latter's death, and took down the Order of the Storm. They subsequently settled down in Dyme, where Kassandra and Natakas had a child, Elpidios.
- The Order of the Ancients led by Amorges attacked Dyme, killing Natakas and taking his and Kassandra's son Elpidios captive.
- Kassandra killed the Ancient Gergis, from whom she learned of the alliance between the Order of the Ancients and the Cult of Kosmos.
- Kassandra and Darius confronted Amorges in Messenia, where they killed Darius' former comrade and stopped the Order of the Ancients' plans in Greece.
- Kassandra and Darius recovered Elpidios from King Darius II south of Messenia. At Kassandra's request, Darius took Elpidios to Egypt where they settled down, and their descendants would give rise to the Assassin Brotherhood.
- The Battle of Amphipolis was fought between Athens and Sparta. On the battlefield, the Spartan Brasidas was killed by Alexios and the Athenian leader Kleon was killed by Kassandra.
- August: Alexios was killed by his sister Kassandra during a confrontation with Kassandra and his mother Myrrine atop Mount Taygetos.
- Kassandra returned to the Sanctuary of Kosmos in Phokis to confront the Cult's leader, who revealed herself to be Aspasia. Expressing her intentions to achieve peace in the world and find a philosopher king, she was ultimately spared by Kassandra, who instead destroyed the Cult's artifact, the Pyramid.
4th century BC
- Alexander the Great, ruler of the Macedonian Empire and ally of the Order of the Ancients, started construction of the Herat Citadel, built on top of an ancient Isu temple.
- June 13: Alexander the Great died after having been fatally poisoned by Iltani, who would retroactively be honored as a legendary Assassin. Though Iltani attempted to obtain his Staff of Eden, Alexander would be interred in the Tomb of Alexander the Great in Alexandria with the artifact.
- The Prongs of the Trident of Eden that Alexander the Great held were divided after his death. His generals Ptolemy I Soter and Seleucus I Nicator received the Faith and Fear prongs respectively, while the Devotion prong was sent to Macedonia.
3rd century BC
- Jing Ke attempted to assassinate King Zheng of Qin, who was supported by the Order of the Ancients, but failed and was killed during the attempt. He was posthumously remembered as one of the "Five Great Assassins" by Sima Qian.
- September 10: Qin Shi Huang, the first Emperor of China previously known as King Zheng of Qin, was killed by Wei Yu – who would later be honored as a legendary Assassin – with a spear, for his tyranny over China.
2nd century BC
- A granodiorite stele, later known as the Rosetta Stone, was inscribed with a decree issued in Memphis on behalf of Pharaoh Ptolemy V Epiphanes, as a result of Greek and ethnic Egyptian tensions. It would also contain sensitive information concerning what would later be known as the Assassin Brotherhood.
1st century BC
- Members of the Order of the Ancients abducted the Medjay Bayek of Siwa and his son Khemu in Siwa, Egypt, in an attempt to obtain information about the Isu vault located there, resulting in Khemu's death.
- Bayek of Siwa temporarily abandoned his Medjay duties to start a quest for vengeance against the Order of the Ancients, sending him on a journey across Egypt.
- Pharaoh Ptolemy XIII, under the influence of the Order of the Ancients, banished his sister Queen Cleopatra from Alexandria to become the sole ruler of Egypt.
- Rudjek, known as the Heron within the Order of the Ancients, was killed by Bayek of Siwa in the Bent Pyramid in Giza, Egypt.
- Bayek returned to the Siwa Oasis, where he exacted revenge on the false Oracle of Siwa, Medunamun, and acquired the Order's Apple of Eden.
- Aya, wife of Bayek and protector to Queen Cleopatra killed Actaeon, known as the Vulture in the Order of the Ancients in Alexandria, before killing Ktesos, the Ram, who tracked her to her apartment.
- Bayek reunited with his wife Aya in Alexandria, where she gifted him with the Hidden Blade owned by Darius, which she received from Queen Cleopatra.
- Bayek travelled across Egypt and took down several members of the Order of the Ancients, including Gennadios, Eudoros, Taharqa, Khaliset, Hetepi and Berenike.
- September 28: Roman general Gnaeus Pompeius Magnus was killed by Lucius Septimius on the orders of the Order of the Ancients, to prevent Cleopatra from starting an alliance with him.
- Bayek, Aya and Cleopatra's follower Apollodorus smuggled Cleopatra into the city of Alexandria to allow her a meeting with Roman general Gaius Julius Caesar, who subsequently chose her over her brother Pharaoh Ptolemy XIII for an alliance.
- Aya infiltrated and opened the door to the Tomb of Alexander the Great to help Cleopatra impress Julius Caesar. This allowed Caesar's ally Flavius Metellus, a Roman general and leader of the Order of the Ancients, to take Alexander the Great's Staff of Eden.
- The Battle of the Nile was fought between the forces of Pharaoh Ptolemy XIII and those belonging to Cleopatra and Julius Caesar. Ptolemy XIII was killed by crocodiles while escaping and his advisor, the Ancient Pothinus, was killed by Bayek.
- Julius Caesar, under the sway of the Order of the Ancients, prevented Bayek from killing the Ancient Lucius Septimius during the Battle of the Nile.
- Cleopatra became the new ruler of Egypt, under the influence of the Order of the Ancients through her ally Julius Caesar.
- Bayek and Aya formed a group consisting of Tahira, Phanos the Younger, Phoxidas and Pasherenptah in opposition of Cleopatra's rule, believing her to have betrayed Egypt and vowing to oppose the Order of the Ancients.
- Roman general Flavius Metellus used Alexander the Great's Staff of Eden and an Apple of Eden to open the door of the Siwa Vault, killing Bayek's friend Hepzefa during their invasion of Siwa.
- Bayek killed Flavius Metellus in Cyrene, where Metellus had been proclaimed proconsul. Achieving vengeance for his son, he retrieved the Apple of Eden.
- Aya recruited Roman senators Marcus Junius Brutus and Gaius Cassius Longinus for their cause and intended to leave for Rome to combat the Order of the Ancients.
- Bayek and Aya agreed to part ways and named their Brotherhood the Hidden Ones, vowing to spread its influence throughout both Egypt and Rome.
- March 15:
- Lucius Septimius, a Roman soldier and member of the Order of the Ancients, was killed by the Hidden One Aya in combat at the Theatre of Pompey.
- Gaius Julius Caesar, dictator of the Roman Republic and figurehead of the Order of the Ancients, was killed during a Roman Senatorial meeting at the Theatre of Pompey by the Hidden Ones Aya, Marcus Junius Brutus, Gaius Cassius Longinus, and twenty-one other Roman Senators.
- As her newly-founded Brotherhood in Rome continued to grow, Aya abandoned her birth name and adopted the name "Amunet".
- October 23: Marcus Junius Brutus committed suicide when nearly defeated by Marcus Antonius and Octavian, the new leader of the Order of the Ancients, at the Battle of Philippi. The other Hidden Ones, including Publius Volumnius, only temporarily managed to revive Brutus with their Shroud of Eden.
- Roman general Gaius Julius Rufio, a member of the Order of the Ancients, conspired to conquer the Sinai Peninsula as a starting point to take Egypt from Cleopatra's control.
- The Mentor Bayek killed the Ancients, the Roman legate Tacito, Egyptian priest Ptahmose and Roman officer Ampelius in the Sinai, to aid the local Sinai bureau of the Hidden Ones led by Tahira.
- The Sinai bureau of the Hidden Ones was attacked and destroyed by Gaius Julius Rufio's men, and Bayek and Tahira were captured by Romans. Amunet saved Bayek from crucifixion, and the two of them later rescued Tahira from Fort Clostra, though she died of her injuries.
- Gaius Julius Rufio was assassinated by the Mentor Bayek aboard Rufio's octareme off the coast of the Sinai, shortly after the Roman general's fleet arrived in Egypt.
- Sinai resistance leader Gamilat was killed by his former ally, the Mentor Bayek, after Bayek discovered Gamilat deceived the population of the Sinai to rally them against the Romans.
- The Hidden Ones spread their influence further to Judea and Petra.
- High Priestess and God's Wife of Amun Isidora used an Apple of Eden to create illusions of ancient pharaohs across Thebes, which would become known as the Curse of the Pharaohs, in retaliation against grave robbers who killed her mother.
- At Amunet's request, Bayek investigated the Curse of the Pharaohs in Karnak. His investigation, aided by Isidora, Sutekh, Merti and Tahemet, led him to explore illusions of Aaru, Aten, Heb Sed and the Duat, where he defeated apparitions of Nefertiti, Akhenaten, Ramesses II and Tutankhamun.
- Isidora was killed by the Mentor Bayek in the Valley of the Kings after Bayek discovered she created the Curse of the Pharaohs. He passed her Apple of Eden on to Sutekh, descendant of Ramesses II, and trusted him to keep it safe.
- Sutekh died in the Waset Desert after having seemingly fallen prey to cobras in the Cobra Oasis, and his mysteriously Apple of Eden vanished.
- August 12:
- Cleopatra, Queen of Egypt and former ally of the Order of the Ancients, was persuaded by her former friend Amunet to give up resistance against Octavian's Roman forces and use poison to take her life. Amunet would go down in history as having killed Cleopatra with an asp.
- Amunet escaped Alexandria amidst the Roman army's attack on the city with Cleopatra's son Caesarion, who she promised to take in as a Hidden One.
- John the Baptist, using a Staff of Eden, started a religious movement with baptism as its central symbol.
- Jesus Christ, wielder of a Shroud of Eden, was crucified by the Order of the Ancients, who proceeded to take possession of the artifact. On his way to his crucifixion in Golgotha, Jesus was met by a Sage known as the Wanderer.
- Peter, one of Jesus' Twelve Apostles, used John the Baptist's Staff of Eden to become the first leader of Christianity and the first Pope.
- James, son of Zebedee, one of Jesus' Twelve Apostles and alleged owner of a Staff of Eden, passed away. The Staff would subsequently be broken into three pieces.
- January 24: Roman emperor Caligula, affiliated with the Order of the Ancients, was killed by the Hidden One Leonius using a dagger.
- Governor Verus of Roman Britain was assassinated by Acolyte Anicius of the Hidden Ones, after the Hidden Ones' pleas to Verus and Emperor Domitian to support citizenship for the Iceni were ignored.
- Caius, a Hidden One working on a contract from the Londinium bureau, attempted to assassinate Roman emperor Hadrian, but was captured and killed.
- Roman emperor Marcus Aurelius agreed to cease hostilities in Britannia and retreat south of the Antonine Wall after motions from the Hidden Ones. Master Eghan of the Hidden Ones was sent to oversee the retreat to verify Aurelius kept his word.
- February 4: Roman emperor Septimius Severus died after having been fatally poisoned by Khloe, a Magister of the Hidden Ones, inside his villa in Eboracum.
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- May 11: The city of Byzantium was renamed Constantinople by Emperor Constantine I, an associate of a Roman Hidden One; it would later become the capital of the Byzantine Empire.
- Roman emperor Theodosius I established the Church of Rome as the new state religion of the Roman Empire, and subsequently started the persecution of pagans. The Hidden One Teague subsequently assassinated the priests Vitus, Secunda and Agapitus in Britannia.
- Magnus Maximus, proclaimed Roman emperor by his troops, retreated a large portion of the Roman army in Britannia to conquer Gaul.
- Marcellus, a Magister of the Hidden Ones, evacuated the Hidden Ones from the bureaus in Eboracum and Venta Belgarum following the Roman retreat from the north of Britannia, and to avoid the hostility of the local population.
- The Hidden One Magister Vitus ordered the withdrawal of their faction from Britannia due to the collapse of the Roman Empire in western Europe, and the threat of invading tribes, advising the Hidden Ones to retreat to the bureau in Cologne.
- Attila became leader of the Hunnic Empire. Utilizing a Sword of Eden named the Sword of Mars, Attila would become feared for his invasions of Europe.
- King Arthur of Britain, a member of the Order of the Ancients and owner of a Sword of Eden named Excalibur, died after having been betrayed by those he loved.
- Sigmund recovered a Sword of Eden named Gram from the tree Barnstokk. The artifact was said to have been placed there by Odin.
- The Battle of Talas was fought between the Abbasid Caliphate and the Tang dynasty, ultimately resulting in an Abbasid victory. The Tang soldier Li E was rescued by a group of Hidden Ones from the west led by Alianna.
- A civil war broke out between members of the Order of the Ancients in China, resulting in conflict between the Golden Turtles faction led by Chancellor Yang Guozhong and the Yeluohe faction led by general An Lushan.
- December 16: An Lushan rebelled against the Tang dynasty, following conflict with another member of the Order of the Ancients, Yang Guozhong.
- February 5: The Yan dynasty was established by An Lushan following his rebellion against the Tang dynasty.
- January 25: An Lushan, Emperor of Yan and leader of the Yeluohe faction of the Order of the Ancients, was assassinated by the Hidden One Li E.
- July 29: King Offa of Mercia, a member of the Order of the Ancients whose rapid territorial expansion paved the way for the unification of England, passed away and was succeeded by Ecgfrith of Mercia.
- May 19: Alcuin, an Anglo-Saxon scholar in service of Emperor Charlemagne of the Carolingian Empire, was killed after discovering the existence of the Order of the Ancients on orders of Charlemagne, himself a leader of the Order.
- January 13: King Æthelwulf of Wessex, Grand Maegester of the Order of the Ancients in Britain, passed away and was succeeded as King of Wessex by Æthelbald.
- Circa 865, viking leader Ragnar Lothbrok was captured and executed in a pit of snakes by King Ælla of Northumbria, a leading figure among the Order of the Ancients.
- March 21: King Ælla of Northumbria, a member of the Order of the Ancients, was executed in a blood eagle ritual by the sons of Ragnar, in retaliation for the execution of Ragnar Lothbrok.
- The Hidden One Ammon was killed in combat with Sigurd Styrbjornsson during a mission to recover a Shroud of Eden from a merchant in Bulgar, and amidst an impending attack of the Order of the Ancients.
- April: King Æthelred I of Wessex, Grand Maegester of the Order of the Ancients in Britain, passed away. His brother, Alfred, succeeded him as King of Wessex and, reluctantly, as Grand Maegaster of the Order.
- December: On the advice of the Hidden One Basim Ibn Ishaq, the vikings Eivor Varinsdottir, her brother Sigurd Styrbjornson, and select members of the Raven Clan left Norway's endless wars and lack of resources and sailed to England.
- January: The Raven Clan arrive in Ledecestrescire, Mercia where they established the settlement of Ravensthorpe from the remnants of an abandoned settlement from the Great Heathen Army.
- Eivor Varinsdottir travelled to an unknown territory called Vinland, where she assassinated Maegester Gorm Kjotvesson at Narfljot Camp. There, Eivor recovered a Crystal Ball from his personal effects and later gave the artifact to the Kanien'kehá:ka of Karonhiakèn:iate'.
- Halfdan Ragnarsson, having found out that Ricsige of Northumbria had betrayed him by siding with the Picts, had Eivor hunt him down and kill him.
- Eivor Varinsdottir and Sigurd Styrbjornson returned to Norway, where they uncovered the Yggdrasil Chamber, in which they experienced a simulation of Valhalla. Realizing they were the reincarnations of Odin and Tyr, Eivor eventually came to reject Odin and convinced her brother to abandon the simulation.
- Basim Ibn Ishaq, the reincarnation of Loki, attacked Eivor after deducing she was the reincarnation of Odin. Eivor defeated Basim in combat with Sigurd's help, and left him trapped inside Yggdrasil's simulation device.
- Ubba Ragnarsson was killed in the Battle of Cynwit by soldier's of Odda, Ealdorman of Devon at Uffentune.
- Eivor Varinsdottir and her allies fought in the Battle of Chippenham, in order to weed out King Alfred and kill him. Alfred escaped, but the vikings were victorious. During the fight, Soma, Hunwald, and Hjorr Halfsson were killed.
- Eivor Varinsdottir successfully wiped out the Order of the Ancients in the Anglo-Saxon kingdoms with the help of King Alfred, the reluctant Grand Maegest of the Order, posing as an informant called "A Poor Fellow-Soldier of Christ". In the Order's wake, Alfred vowed to establishe a new order, which would become the Templar Order.
- Mentor Fuladh of the Justanid region held a council at the newly constructed fortress of Aluh-Amut, built atop the ruins of a small Isu temple. Acolyte Hytham was invited by Mentor Rayhan to receive a promotion and give an account of Basim Ibn Ishaq's desertion.
- The first pictorial representation of a gun was made in India, after it had been created using the knowledge from an Apple of Eden.
- King Eric the Victorious of Sweden, backed by the Hidden Ones, defended himself against the forces of Scandinavian prince Styrbjörn the Strong and his ally Harald Bluetooth, a member of the Templar Order and owner of a prong of the Trident of Eden.
- The populace of Rome revolted against Pope Sylvester II, a leader of the Templar Order, who was branded a heretic and sorcerer for his support and promotion of science.
- The Brotherhood that started as the Hidden Ones became a public organization for the first time in their history under the name Assassins, under the directive of Hassan-i Sabbāh in the Levant.
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- July 15: An army of Crusaders captured the city of Jerusalem, marking the end of the First Crusade and the start of a Crusader presence in the Holy Land for over two centuries.
- January 13: The Order of the Knights Templar was publicly recognized as a military order during the Council of Troyes, with Hugues de Payens serving as the first public Grand Master. With help from Bernard de Clairvaux, de Payens formed the Latin Rule.
- Hassan the Younger sent the Assassin who would later be known as Al Mualim from Alamut to establish a fortress in Masyaf, speculated by some to have been due to an ideological rift between the two.
- Sultan Salāḥ ad-Dīn laid siege to the Levantine Assassins' fortress in Masyaf. Acting on information received from Ahmad Sofian, the Assassins' leader Al Mualim tasked Umar Ibn-La'Ahad with infiltrating the enemy camp, where he left a note tied to a dagger in Salāḥ ad-Dīn's tent.
- Šihāb ad-Dīn, uncle to Salāḥ ad-Dīn, brokered a truce with the Assassins on the condition that Umar Ibn-La'Ahad be executed for taking the life of a Ayyubid nobleman during his infiltration of their camp. Against Al Mualim's will, Umar voluntarily had his life taken.
- Ahmad Sofian committed suicide inside the quarters of Umar Ibn-La'Ahad's son Altaïr because of his remorse over giving Umar's name to the Saracens while in their captivity.
- July 4: The Battle of Hattin occurred between the Crusader Kingdom of Jerusalem and the Saracen forces of Saladin, resulting in a Saracen victory. King Guy of Lusignan, Templar Grand Master Gerard de Ridefort and Raynald of Châtillon were taken as prisoners and later released.
- Altaïr Ibn-La'Ahad assassinated Haras, an Assassin-turned Templar, in Masyaf fortress during an attack by the Templars, saving the life of Al Mualim. Altaïr was elevated to the rank of Master Assassin.
- October 4: Templar Grand Master Gerard de Ridefort was beheaded on orders of Saladin after having been captured during the Siege of Arsuf by the Saracen army.
- The Knights Templar besieged the Assassins' fortress in Aleppo, on orders of their de facto leader Lord Basilisk, though the Assassins were able to fend off the attack.
- Al Mualim tasked Altaïr Ibn-La'Ahad with finding the Chalice, an ancient artifact that held powers similar to a Piece of Eden.
- Altaïr Ibn-La'Ahad traveled to Damascus and assassinated the Templar merchant Tamir, and the Templar Knight Alaat on behalf of Fajera, who handed him one of the keys to the Temple of the Sand, where the Chalice was supposedly held.
- Roland Napule was assassinated by Altaïr Ibn-La'Ahad in Tyre on orders of the local rafiq Hamid. Altaïr retrieved a second key to the Temple of the Sand from one of Napule's captives.
- Altaïr Ibn-La'Ahad retrieved the third key to the Temple of the Sand from Templar leader Basilisk at a party in Jerusalem, acting upon information gained from the rafiq Kadar and the nobleman Ayman.
- Altaïr Ibn-La'Ahad killed the Master of the Templars' Jerusalem Tower and his student while attempting to retrieve a map of the Temple of the Sand.
- Lord Basilisk attempted to stop the Siege of Acre by poisoning Acre's water supply, though the plan was thwarted by Altaïr Ibn-La'Ahad. Altaïr bested Basilisk in combat, but spared his life in exchange for the location of the Chalice.
- Altaïr Ibn-La'Ahad killed Harash, the second-in-command of Al Mualim, after hearing of his betrayal from Adha, who revealed herself to be the Chalice.
- Lord Basilisk was killed by Altaïr Ibn-La'Ahad in the harbor of Tyre, after the Templars captured Adha. Despite Basilisk's death, the Templars shipped Adha away from Tyre.
- Altaïr Ibn-La'Ahad and the brothers Malik and Kadar Al-Sayf infiltrated the Jerusalem Vault to retrieve an Apple of Eden. After encountering Templars led by Grand Master Robert de Sable, Kadar was killed and Malik lost his left arm, though the latter brought the artifact back to Masyaf.
- The Assassins fended off an attack by the Knights Templar led by Robert de Sable. Al Mualim demoted Altaïr Ibn-La'Ahad for betraying the three tenets of the Assassin's Creed.
- July–September: Altaïr Ibn-La'Ahad killed eight of his nine Templar assassination targets – Tamir, Garnier de Naplouse, Talal, Abu'l Nuqoud, William of Montferrat, Majd Addin, Sibrand and Jubair al Hakim – in the cities of Damascus, Acre and Jerusalem, to restore his rank of Master Assassin.
- September: Altaïr Ibn-La'Ahad attempted to assassinate Robert de Sable at Majd Addin's funeral in Jerusalem, though Robert had assigned Maria Thorpe as his decoy; Altaïr spared Maria's life.
- September 7: Crusader and Saracen forces clashed at the Battle of Arsuf, where the Crusaders emerged victorious. The Assassin Altaïr Ibn-La'Ahad fought his way across the battlefield to the Crusader camp, where he challenged Robert de Sable to a duel, in which de Sable was killed.
- Al Mualim was killed by Altaïr Ibn-La'Ahad after betraying the Assassin Brotherhood by brainwashing his subjects using the Apple of Eden to make them worship him.
- Abbas Sofian sparked a minor civil war among the Assassins against Altaïr Ibn-La'Ahad. Abbas stole their Mentor's Apple of Eden, though it slowly began killing him, until he was saved by Altaïr.
- Altaïr Ibn-La'Ahad succeeded Al Mualim as Mentor of the Levantine Brotherhood of Assassins, after persuading the Assassins of his capabilities.
- Grand Master Armand Bouchart, who succeeded Robert de Sable, relocated the Knights Templar to Cyprus. During their relocation from Acre, Altaïr Ibn-La'Ahad led an Assassin attack on Acre's harbor and captured Maria Thorpe.
- Altaïr Ibn-La'Ahad killed the Templar captain Frederick "the Red" in Limassol Castle, after establishing contact with Alexander of Limassol, the local leader of the resistance against the Knights Templar.
- Altaïr Ibn-La'Ahad rescued Maria Thorpe from imprisonment by Armand Bouchart, who did not intend to break the Latin Rule by conspiring with women. The two traveled by boat to Kyrenia.
- Jonas, a merchant from Kyrenia, was killed by Altaïr Ibn-La'Ahad on behalf of a Templar agent posing as the Kyrenia resistance leader Barnabas, triggering a riot among the populace.
- Moloch, leader of a local group of fanatics and a Templar ally, was killed by Altaïr Ibn-La'Ahad in Kantara Castle, acting upon information gained from Maria Thorpe and resistance soldier Markos.
- The Dark Oracle, a former Cypriot noblewoman, provided the Knights Templar with the locations of resistance members. Altaïr Ibn-La'Ahad rescued the members from captivity, and killed the Dark Oracle in Buffavento Castle.
- Maria Thorpe and Altaïr Ibn-La'Ahad infiltrated Saint Hilarion Castle, where Altaïr killed Moloch's sons, the Templars Shalim and Shahar, eradicating the Templar presence in Kyrenia.
- The Knights Templar moved all their artifacts out of the Templar Archive in Limassol to an unknown location, on orders of Grand Master Armand Bouchart.
- Grand Master Armand Bouchart was killed by Altaïr Ibn-La'Ahad, during a duel between the two in the Templar Archive.
- July 12: The Crusaders conquered and sacked the city of Constantinople, ending the Fourth Crusade. During the siege, Altaïr Ibn-La'Ahad, who had come to Constantinople to spread the influence of the Assassins, was forced to retreat from the city.
- The First Barons' War started between the forces of King John of England, supported by the Assassin William of Cassingham, and the rebelling English Barons, led by the Assassin Robert Fitzwalter and aided by France.
- Altaïr Ibn-La'Ahad, his wife Maria and their son Darim left Masyaf to oppose the rise of the Mongol Empire and eliminate Genghis Khan. Malik Al-Sayf was left to lead the Assassins, with help of Darim's younger brother Sef.
- Sef Ibn-La'Ahad, son of Altaïr Ibn-La'Ahad, was killed by the apprentice Swami on orders of Abbas Sofian, in an attempt to claim control of the Levantine Assassins.
- Malik Al-Sayf was framed for the murder of Sef Ibn-La'Ahad by Abbas Sofian, who placed a council in charge of the Levantine Assassins, with himself at its head.
- February: Jochi Khan, first son of the Mongol warlord Genghis Khan, was fatally poisoned by the Assassin Darim Ibn-La'Ahad.
- August: Genghis Khan, ruler of the Mongol Empire, was killed by the Assassin Darim Ibn-La'Ahad in China, after he fell off his horse when it was shot by Qulan Gal.
- Altaïr Ibn-La'Ahad, Maria Thorpe and their son Darim returned to Masyaf, where they were informed of the ruling council. Darim traveled to Alamut to meet with Sef's wife and children.
- Malik Al-Sayf was rescued by Altaïr Ibn-La'Ahad from Masyaf's dungeons, from whom Altaïr heard the truth about his son Sef's death. In Altaïr's and Maria's absence, Malik was beheaded by Swami.
- Altaïr Ibn-La'Ahad and Maria Thorpe confronted Abbas Sofian in Masyaf's fortress. Upon being taunted by Swami, Altaïr used the Apple to force Swami to kill himself. In the ensuing frenzy, Swami fatally stabbed Maria. Altaïr escaped Masyaf with help from his son Darim.
- Altaïr exiled himself to the Assassins' fortress at Alamut, while Abbas usurped the title of Mentor. At Alamut, Altaïr made several discoveries and inventions using the Apple of Eden, and discovered Memory Seals in the Isu temple beneath the fortress.
- April 9: The Battle of Legnica was fought between the Mongol Empire and the Kingdom of Poland, aided by the Knights Templar. A Templar knight was captured and later brought to the court of the Mongol prince Möngke Khan.
- December 11: Ögedei Khan, the second Great Khan of the Mongol Empire and the third son of Genghis Khan, was killed by the Assassin Nergüi.
- The merchant Mukhlis was saved from the brigands led by Bayhas outside Masyaf by Altaïr Ibn-La'Ahad, who had returned from his self-imposed exile in Alamut.
- Altaïr Ibn-La'Ahad started gaining the support of the Levantine Assassins and Masyaf's villagers in attempting to take back the declining Brotherhood under Abbas Sofian, and befriended Malik Al-Sayf's son Tazim.
- Abbas Sofian was killed by Altaïr Ibn-La'Ahad using the Hidden Gun, during a non-violent assault on Masyaf fortress by Altaïr and his supporters. Altaïr was welcomed as Mentor of the Levantine Brotherhood of Assassins.
- Altaïr Ibn-La'Ahad ordered the start of the construction of a hidden library beneath the fortress of Masyaf to hide the knowledge and secrets of the Brotherhood.
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- July 1: Möngke Khan, a Mongol prince and founder of the Mongolian Rite of the Templar Order, became the fourth emperor of the Mongol Empire.
- Batu Khan, founder of the Golden Horde, a sub-khanate of the Mongol Empire, was murdered on orders of his subordinate Alexander Nevsky.
- December 15: Hülegü Khan destroyed the Assassin fortress of Alamut, during his destruction of the Levantine Assassins' holdings.
- January: Niccolò and Maffeo Polo arrived in Masyaf on invitation of their friend Darim Ibn-La'Ahad, and became acquainted with the Mentor Altaïr Ibn-La'Ahad.
- July: Altaïr Ibn-La'Ahad and his son Darim began training Niccolò and Maffeo Polo in the ways of the Assassin Brotherhood, in the hopes that they would help spread their ideology to the west. Niccolò started writing his journal, The Secret Crusade, detailing Altaïr's life.
- August 12:
- Hülegü Khan began the Mongol siege on the Assassin fortress at Masyaf, ultimately rendering the fortress abandoned.
- Altaïr Ibn-La'Ahad guided Niccolò and Maffeo Polo out of the city and granted them his Codex, the Masyaf Keys and several books, and allowed the rest of the Brotherhood to escape.
- Altaïr Ibn-La'Ahad passed away after locking himself inside his library with the Apple of Eden and imprinting his last memory into the sixth Memory Seal.
- August 14: Niccolò and Maffeo Polo were attacked by a Mongol raiding party in the Syrian countryside, and lost Altaïr Ibn-La'Ahad's Codex.
- January 1: Niccolò and Maffeo Polo established an Assassins Guild in Constantinople, in the Byzantine Empire.
- January: Niccolò and Maffeo Polo scattered Altaïr Ibn-La'Ahad's books around various landmarks in Constantinople, and hid the five Masyaf Keys in underground tombs located beneath the city.
- Niccolò and Maffeo Polo left Constantinople to journey to the Mongol Empire to retrieve Altaïr Ibn-La'Ahad's Codex, without succes.
- The Mongol Empire, led by Möngke Khan, started besieging Diaoyu Fortress as part of their campaign to conquer China. A Chinese Assassin fought as a commander in the Song Dynasty army and helped ensure victory, but perished in the conflict.
- August 11: Möngke Khan, emperor of the Mongol Empire and Templar, was killed by the Chinese Assassin apprentice Zhang Zhi to avenge her father, against her Mentor Kang's wishes.
- November 14: Alexander Nevsky, a Russian leader and Templar ally, was killed by the Assassin Nergüi for his alliance with the Golden Horde and influence over the Mongol Empire.
- February 8: Hülegü Khan was killed by the Mongolian Assassin Nergüi, out of retribution for the destruction of Masyaf and the Levantine Assassins.
- Niccolò and Maffeo Polo returned to their home in Venice, Italy, where they established an Assassins Guild and first met Niccolò's son Marco.
- November: Marco Polo left on a journey to Asia with his father Niccolò and uncle Maffeo, intent on retrieving the codex of Altaïr Ibn-La'Ahad.
- May: Marco Polo retrieved Altaïr Ibn-La'Ahad's Codex from Kublai Khan's summer palace in Shangdu, bringing it with him when he returned to Venice several years later.
- July 7: Pope Benedict XI died after being poisoned by his political rival Guillaume de Nogaret, the councillor to King Philip IV of France and Mentor of the French Assassins.
- October 13:
- The Knights Templar were branded heretics by King Philip IV of France, under influence of Mentor Guillaume de Nogaret, and their Temple in Paris was besieged, resulting in the arrests of numerous Templars including Grand Master Jacques de Molay.
- Jacques de Molay's advisor hid their Sword of Eden and the Codex Pater Intellectus, and was subsequently killed by Master Assassin Thomas de Carneillon.
- March 18: Jacques de Molay, the last publicly recognized Grand Master of the Knights Templar and Sage, was burned at the stake alongside Geoffroi de Charney. Before his death, de Molay sent nine of his most trusted men across the known world to continue the Order's objectives underground.
- September 14: Dante Alighieri was killed by the Templars, revealing their continued existence to the Assassins.
- September 25: Domenico Auditore and his wife and son attempted to bring Altaïr Ibn-La'Ahad's Codex to Spain, but were attacked in the Otranto harbor by pirates employed by the Templars; his wife did not survive the encounter.
- January: Marco Polo, and later Domenico Auditore's father, were killed by the Templars.
- Domenico Auditore bought and renovated the villa in Monteriggioni, renaming it Villa Auditore. Monteriggioni became the headquarters of the Italian Assassins.
- Lukas Zurburg was saved by the Assassins from a road thief while travelling from Essen to Adendorf. Zurburg joined the Assassin Brotherhood.
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- The Brothers of the Cross, a secret Templar organization, traveled through the Holy Roman Empire looking for the Ankh, pretending to offer people protection from the Black Death.
- The Brothers of the Cross and Lukas Zurburg mysteriously vanished from public view.
- The Assassins stole the original Shroud of Eden from Geoffroy de Charny, a French knight and Templar, and replaced it with a forgery. A member of the Auditore family ordered the Shroud to be buried beneath the Villa Auditore.
- The Hongwu Emperor ascended the throne of China and established the Ming dynasty. A Sage would end up serving in his court as a Confucian scholar.
- June 2: A Templar expedition led by the Templar Knights Henry Sinclair and James Gunn landed on North American soil.
- July 17: Zhu Di became the Yongle Emperor, with aid from the Templars, founding the Ming dynasty and succeeding the Jianwen Emperor.
- July: The Chinese imperial army arrested and executed thousands of people, on orders of the Yongle Emperor, on suspicions of being Assassins; the Assassin leader Fang Xiaoru was killed during the purge. Li Tong managed to escape the Assassin headquarters in Beijing with another apprentice and an Apple of Eden.
- Autumn: The Chinese admiral Zheng He started his fifth exploration voyage, discovering lands in Southeast Asia, Africa and the Middle East, ahead of European explorers.
- August 12: The Yongle Emperor was assassinated by the Assassin Li Tong while trying to suppress a rebellion in the Gobi Desert.
- May 30:
- June 29: The Battle of Anghiari was fought between the Florentine and Milanese armies. A 6-year old Mario Auditore alerted the Florentine commander Micheletto Attendolo of a surprise attack by the Milanese, resulting in a Florentine victory.
- Ilario Auditore, an old friend of Cosimo de' Medici, was succeeded as Gonfaloniere of Florence by Luca Albizzi.
- May 29: Sultan Mehmet II of the Ottoman Empire conquered Constantinople, the capital of the Byzantine Empire, utilizing an Apple of Eden, effectively destroying the Byzantine Empire.'
- September: Monteriggioni was besieged by the Florentine army led by Federico da Montefeltro. Under Mario Auditore's leadership, Monteriggioni managed to fend off the siege.
- October 1: Mario Auditore discovered the Shroud of Eden beneath the Villa Auditore in Monteriggioni; while exploring the crypts, Mario lost an eye upon triggering a trap.
- Lorenzo de' Medici, son of Cosimo de' Medici and the future leader of Florence, was saved by the Assassin Giovanni Auditore da Firenze from drowning in the Arno in Florence.
- December: Vlad Tepes, the ruler of Wallachia and a Templar, was killed during an Assassin attack led by Ottoman Assassin leader Ishak Pasha.
- December 26: Galeazzo Maria Sforza, the Duke of Milan, was killed by Templar conspirators Giovanni Andrea Lampugnani, Carlo Visconti and Gerolamo Olgiati. Visconti and Olgiati were captured and later hanged, while Lampugnani was killed by a Moorish guard.
- December 29: Giovanni Auditore da Firenze and his sons Federico and Petruccio were hanged in front of the Palazzo della Signoria, on false accusations of treason against Florence, by secret Templar Uberto Alberti.
- December 31: Gonfaloniere Uberto Alberti was killed by Ezio Auditore da Firenze for betraying the Auditore family, during an exposition of Andrea del Verrocchio's work.
- January: Ezio Auditore and his mother Maria and sister Claudia left Florence and moved to Monteriggioni to live with their uncle Mario in the Villa Auditore.
- April 14: Vieri de' Pazzi, a Templar, was killed by his childhood rival Ezio Auditore da Firenze in San Gimignano in Tuscany for conspiring with the Templars.
- April 26:
- Lorenzo de' Medici, ruler of Florence, and his brother Giuliano were attacked by the Templar Pazzi conspirators, resulting in the death of Giuliano. Lorenzo was saved and brought to safety by Ezio Auditore da Firenze, who had spied on the conspirators' meeting with aid from La Volpe.
- Francesco de' Pazzi was killed by Ezio Auditore da Firenze. Francesco's body was hung from the Palazzo della Signoria, while his uncle Jacopo de' Pazzi was rallying a mob against the Medici.
- Antonio Maffei, a Pazzi conspirator, was killed by Ezio Auditore da Firenze atop San Gimignano's tallest tower.
- April 12: Francesco Salviati, a Pazzi conspirator, was killed by Ezio Auditore da Firenze in his villa near San Gimignano.
- May 3: Bernardo Baroncelli, a Pazzi conspirator, was killed by Ezio Auditore da Firenze near the city walls of San Gimignano.
- Stefano da Bagnone, a Pazzi conspirator, was killed by Ezio Auditore da Firenze in the Monte Oliveto Maggiore outside San Gimignano.
- January 3: Jacopo de' Pazzi was killed by Ezio Auditore da Firenze, after he was mortally wounded by Grand Master Rodrigo Borgia and Emilio Barbarigo during a Templar meeting in the Antico Teatro Romano for his failure during the Pazzi Conspiracy.
- March 3: Ezio Auditore da Firenze and Leonardo da Vinci sailed to Venice, with aid from Caterina Sforza, where Ezio would form an alliance with the local thieves guild.
- May 3: Sultan Mehmet II of the Ottoman Empire passed away, leaving his two sons Bayezid and Cem, a Templar, competing for the throne. Though Cem managed to secure their father's Apple of Eden, Bayezid secured the Ottoman throne.
- June: Prince Cem hid his Apple of Eden in the Templar Archive on Cyprus after realizing the artifact refused to communicate with him, so that the European Templars could find it.
- June 29: Prince Cem met the Knights Hospitaller on Rhodes; however, he was betrayed by the Hospitallers and sent to be imprisoned in Europe, where he would become acquainted with Grand Master Rodrigo Borgia in Italy.
- September 11: Emilio Barbarigo, leader of the Venetian merchant guild and Templar, was killed by Ezio Auditore da Firenze with aid from members of the local thieves guild, namely their leader Antonio de Magianis, Rosa and Ugo.
- September 14: Carlo Grimaldi was killed by Ezio Auditore da Firenze, who infiltrated the Palazzo Ducale with Leonardo da Vinci's flying machine, for poisoning Doge Giovanni Mocenigo.
- February 15: Marco Barbarigo, the Templar Doge of Venice, was killed by Ezio Auditore da Firenze after infiltrating the Doge's Carnevale feast with help from Sister Teodora.
- July 11:
- Silvio Barbarigo and Dante Moro, members of the Templar Order, were killed by Ezio Auditore da Firenze with aid from Bartolomeo d'Alviano's mercenaries.
- The Italian Templars left Venice to retrieve the Piece of Eden from Cyprus, after ascertaining its location from Altaïr Ibn-La'Ahad's Codex pages.
- June 16: The army of Lambert Simnel, a pretender to the English throne and Templar puppet, was defeated by King Henry VII of England, and Simnel was imprisoned.
- June 25: Ezio Auditore da Firenze stole the Apple of Eden from the Templars in Venice, who had just returned from Cyprus. After a confrontation with Grand Master Rodrigo Borgia, Ezio was formally inducted into the Assassin Order by his allies from the courtesans, thieves and mercenaries guilds.
- July 7:
- The brothers Checco and Ludovico Orsi attacked the city of Forlì on orders of Grand Master Rodrigo Borgia, after its ruler Caterina Sforza had hired the Orsi brothers to kill her Templar husband Girolamo Riario.
- Ludovico and Checco Orsi were killed by Ezio Auditore da Firenze, who had come to Forlì with Niccolò Machiavelli to give the Apple of Eden to Caterina Sforza for safekeeping; Ezio passed out after being wounded by Checco, and lost the artifact to the monk Girolamo Savonarola.
- Christopher Columbus, accompanied by the Assassin Luis de Santángel, was lured into an ambush in Venice by Rodrigo Borgia, who promised to fund Columbus' next voyage but wanted to keep the New World a Templar secret. Columbus was saved by Ezio Auditore da Firenze.
- Luis de Santángel persuaded Ezio Auditore da Firenze to accompany him and Columbus back to Spain, in order to help him and fellow Assassin Raphael Sánchez save the Spanish Assassins from persecution by the Spanish Inquisition.
- Aguilar de Nerha was officially inducted into the Assassin Brotherhood by the Mentor Benedicto, having joined their ranks after his parents were killed in the Spanish Inquisition.
- Prince Ahmed of Granada, son of Emir Muhammad XII of Granada, was taken from Assassin protection by Templars led by Ojeda in an effort to obtain the King's Apple of Eden.
- Spanish Assassin Mentor Benedicto, along with other Assassins including Aguilar de Nerha and Maria, attempted to stop the abduction of Prince Ahmed. Benedicto, Aguilar and Maria were captured, while the other Assassins were killed in the attempt.
- January 2:
- Emir Muhammad XII of Granada, during the surrender of the Emirate of Granada, handed the Apple of Eden over to Tomás de Torquemada for the return of his son.
- The Assassins Aguilar de Nerha and Maria engaged in a struggle with Tomás de Torquemada and Ojeda for the Apple of Eden, resulting in the deaths of Maria and Ojeda. Aguilar escaped with the artifact.
- Ezio Auditore da Firenze confronted Grand Inquisitor Tomás de Torquemada, who feigned ignorance of his Templar affiliations. Ezio subsequently decided against killing Torquemada, and later returned to Italy.
- August: Christopher Columbus, an Assassin ally, was entrusted with an Apple of Eden by the Assassin Aguilar de Nerha in Palos de la Frontera while preparing for his voyage to the New World.
- August 11: Rodrigo Borgia was elected as the new head of the Catholic Church, after purchasing votes from the other cardinals, and became known as Pope Alexander VI.
- Inquisitor and Templar Gustavo Ramírez discovered a piece of the Staff of Eden hidden in St. Rafael Abbey, and delivered it to Grand Inquisitor Tomás de Torquemada, while evading pursuit by the Assassins.
- The Spanish Assassins stole a second piece of the Staff of Eden from Dominican monks at the Monastery of St. Lucia before Inquisitor Gustavo Ramírez could recover it.
- The Assassin bureau leader in Burgos, Diego de Alvarado, was captured and secretly persuaded to work as a Templar agent by the Inquisitor Gustavo Ramirez. He was subsequently rescued by the Assassins.
- Gustavo Ramirez recovered the last piece of the Staff of Eden from Sobroso Castle, where he was betrayed and killed by Diego de Alvarado. De Alvarado fled before the Assassins could recover the artifact.
- October 12: Christopher Columbus' fleet discovered the Americas, and landed on the island of Guanahani, inhabited by the Taíno.
- November 9: Girolamo Savonarola stirred the Florentines into rebelling against Piero de' Medici using the Apple of Eden. The Medici were exiled and Savonarola became the city's de facto leader.
- Marcello Savonarola, cousin to Girolamo Savonarola, was saved in Florence by Ezio Auditore da Firenze from Borgia guards.
- Piero de' Medici was saved by Girolamo Savonarola's followers in Venice. With Ezio Auditore da Firenze, Piero took down his attackers and a corrupt herald.
- February 25: Prince Cem was killed in Capua by the Assassins, who believed the Borgia were planning to use Cem to conquer Constantinople.
- Ottoman Assassins Ishak Pasha, Yusuf Tazim, Murat Bin Husn and Aleksei Zima travelled to Spain to intercept a trade deal between the Byzantine Templars and Spanish Templars, hoping to recover Niccolò Polo's journal, though the Templars had already taken it elsewhere.
- June 14: Juan Borgia was killed by the courtesan Fiora Cavazza on orders of his brother Cesare Borgia, allowing the latter to become Captain General of the Papal Armies.
- Ezio Auditore da Firenze killed Girolamo Savonarola's nine lieutenants, in an effort to remove Savonarola's control over the Florentine population and regain the Apple of Eden.
- March 3: Giovanni Borgia was born to Lucrezia Borgia and either her brother Cesare Borgia or the Assassin Perotto Calderon, but suffered from a life-threatening deformation. Calderon stole the original Shroud of Eden from his Brothers in Agnadello to save his son's life. The Assassins subsequently killed Perotto.
- May 23:
- Girolamo Savonarola was captured by an angry Florentine mob in front of the Palazzo Pitti. Ezio regained the Apple of Eden, after it was stolen by a Borgia soldier.
- Girolamo Savonarola was killed by Ezio Auditore da Firenze out of mercy while being burned at the stake in front of the Palazzo della Signoria in Florence.
- Tomás de Torquemada reconstructed the shattered Staff of Eden of St. James in an Isu vault known as the Forge beneath the Monastery of St. Thomas Aquinas in Ávila, Spain.
- September 17: Tomás de Torquemada, Grand Inquisitor of Spain, was killed by the Spanish Brotherhood of Assassins inside the Forge in Ávila, Spain. The Staff of Eden was subsequently destroyed using the Forge's collapsing structures, and its remnants were buried.
- November 23: Perkin Warbeck, a Templar, was hanged by King Henry VII of England for his attempt to claim the English throne.
- December 28:
- Pope Alexander VI was defeated by the Assassin Ezio Auditore da Firenze in a fistfight at the entrance of the Vatican Vault; realizing that killing Rodrigo would not bring his family back, Ezio chose to spare the Pope's life.
- Ezio Auditore da Firenze received a message from the Precursor Minerva for Ezio's descendant Desmond Miles, after opening the vault doors using his Apple of Eden and the Papal Staff.
- January 2: Monteriggioni was besieged and destroyed by the Papal Army under orders of Cesare Borgia, who executed the captured Assassin leader Mario Auditore and took possession of the Assassins' Apple of Eden; Ezio Auditore was severely wounded during the siege, and Caterina Sforza was captured
- January: Niccolò Machiavelli became the leader of the Italian Assassins and set up headquarters on Tiber Island in Rome to fight the Borgia. Ezio Auditore da Firenze joined him and later set up an underground network in the city led by his sister Claudia, La Volpe and Bartolomeo d'Alviano.
- Cesare Borgia and Sirus Favero founded the Crows, a Templar organization dedicated to eradicating the Assassins by adopting their own techniques and weaponry. They deceived the Spanish Assassin Raphael Sanchez into training the Crows for five years at Vallombrosa Abbey.
- May: Nicolaus Copernicus was saved from Borgia attacks by Ezio Auditore da Firenze, after Copernicus betrayed the Templar Order by making his scientific discoveries public.
- December 16/17: Italian Assassins destroyed several warehouses and factories in Calicut, India owned by Pedro Álvares Cabral, a Portuguese explorer tasked with eliminating the local Assassins Guild. The population of Calicut rose in rebellion against Cabral, and he fled the city.
- June 30: Caterina Sforza escaped her imprisonment by Lucrezia Borgia in the Castel Sant'Angelo with the help of the Assassin Ezio Auditore da Firenze.
- September 20: Agostino Barbarigo, the Doge of Venice and an Assassin ally, died after having been poisoned by an Assassin team consisting of Francesco Vecellio, Cipriano Enu and Tessa Varzi for making deals with the Borgia.
- Ezio Auditore da Firenze destroyed the war machines that Leonardo da Vinci designed on orders of Cesare Borgia, on Da Vinci's own request.
- Yusuf Tazim met with a contingent of Venetian Assassins in an joint effort to steer the Ottoman–Venetian War to a peaceful end.
- October 18: The University of Wittenberg opened its doors. Its founder, Friedrich der Weise, previously received a large anonymous donation from the Assassins, stolen from the Templars.
- November 1: Vasco da Gama bombarded Calicut for two days in retaliation for the Assassins routing Pedro Álvares Cabral; the Assassins later eliminated da Gama's commanders who were left in the city.
- December 31: Vitellozzo Vitelli and Oliverotto da Fermo were killed by Micheletto Corella for rebelling against Cesare Borgia.
- August 1: Juan Borgia the Elder was killed by Ezio Auditore da Firenze at Juan's Pagan party in Rome.
- Baron Octavian de Valois was killed in the Castra Praetoria in Rome by Ezio Auditore da Firenze, with aid from Bartolomeo d'Alviano's mercenaries.
- Micheletto Corella's attempt on Pietro Rossi's life was twarted by Ezio Auditore da Firenze, though he ultimately spared Micheletto's life.
- Ezio Auditore da Firenze was promoted to Mentor of the Italian Brotherhood of Assassins, and Claudia Auditore da Firenze was inducted into the Brotherhood.
- August 18: Pope Alexander VI was killed by his son Cesare Borgia, using the poisoned apple that the Pope intended to kill his son with for his reckless behaviour; Ezio Auditore da Firenze retrieved the Apple of Eden from the courtyard of Saint Peter's Basilica ahead of Cesare.
- November 23: Margaret of York was fatally poisoned by the Assassins on behalf of King Richard VII of England, for plotting to claim the English throne in a Yorkist Templar plot.
- December: Cesare Borgia was arrested by Fabio Orsini on orders of Pope Julius II, after losing a fight with the Assassins in front of the Porta Aurelia in Rome.
- Cesare Borgia escaped imprisonment from the Castel Sant'Angelo, but was captured by Ezio Auditore da Firenze near Ostia. Pope Julius II struck a deal with King Ferdinand and Queen Isabela of Spain to have Cesare imprisoned in the Castillo de la Mota in Valencia.
- Claudia Auditore da Firenze stepped down as the madam of the Rosa in Fiore in Rome after having been taken captive by Templar spies. The Venetian thief Rosa took over the position.
- November 26: Queen Isabella I of Castille passed away afer having been poisoned by her servant, an acquaintance of Luis de Santángel, at the request of the Assassins for colluding with the Borgia.
- Micheletto Corella was taken captive in Zagarolo after Ezio Auditore da Firenze led a force of 100 Assassins and thieves on against Micheletto's army. Micheletto was imprisoned in the Palazzo della Signoria in Florence and interrogated.
- Ezio Auditore da Firenze locked his Apple of Eden in the Isu vault beneath the Colosseum, on the artifact's instructions.
- June 24: Ezio Auditore da Firenze, Niccolò Machiavelli and Leonardo da Vinci started their journey to Valencia to find Micheletto Corella, based on information from a courtesan named Camilla in Naples.
- March 12: Cesare Borgia fell to his death from the walls of Viana Castle after being dropped by the Assassin Ezio Auditore da Firenze during the Siege of Viana.
- May 14: The Republic of Venice and Kingdom of France fought at the Battle of Agnadello, resulting in a French victory. Bartolomeo d'Alviano was captured by the French, while trying to protect their Shroud of Eden from falling into King Louis XII's hands.
- September 10: An earthquake struck Constantinople. Templars fighting under the Byzantine banner re-emerged in the city.
- January: Niccolò di Pitigliano was killed by the Assassin Francesco Vecellio in Lonigo, for terrorizing the citizens of Lonigo and abandoning Bartolomeo d'Alviano at the Battle of Agnadello; Francesco took the Shroud of Eden, which Niccolò had stolen, back to the Assassins.
- May 12–30: The Prince of Anhua rebellion, orchestrated by the Chinese Assassins in an attempt to assassinate Liu Jin, leader of the Eight Tigers, took place.
- Winter: The Assassin Ezio Auditore da Firenze left Italy and started his journey to Masyaf, after having found a letter in 1509 written by his father detailing Altaïr Ibn-La'Ahad's library.
- Ezio Auditore da Firenze was captured and ambushed by Byzantine Templars under the command of Leandros in Masyaf, but escaped his execution by hanging.
- Ezio Auditore da Firenze killed Leandros in Atlas Village, after pursuing him through the Syrian countryside; Ezio retrieved The Secret Crusade by Niccolò Polo from Leandros.
- May: Ezio Auditore da Firenze arrived in Constantinople and became familiarized with the Ottoman Assassins, led by Yusuf Tazim, and their struggle against the Byzantine Templars.
- Ezio Auditore da Firenze found four of the five Masyaf Keys over the course of various months with aid from bookkeeper Sofia Sartor in the Yerebatan Cistern, the Galata Tower, the Forum of the Ox and the Maiden's Tower.
- Prince Suleiman was rescued from abduction by the Byzantine Templars at a party in Topkapı Palace by the Ottoman Assassins. Suleiman and Ezio Auditore da Firenze formed an alliance.
- The Janissary captain Tarik Barleti was assassinated by Ezio Auditore da Firenze on incorrect suspicions of colluding with the Templars.
- The Great Chain was destroyed by Ezio Auditore da Firenze with explosives. Ezio proceeded to set the docked Ottoman fleet ablaze using Greek Fire, and made his way to the Templars' hideout in Cappadocia alongside Piri Reis.
- Shahkulu, a Turkmen Templar, was killed by Ezio Auditore da Firenze in Derinkuyu with aid from the Ottoman spy Dilara.
- Ezio Auditore da Firenze destroyed the Byzantine Templars' ammunition storage inside Derinkuyu, causing the city to be filled with smoke, creating widespread panick.
- Manuel Palaiologos was killed by Ezio Auditore da Firenze in the outskirts of Derinkuyu. Ezio was confronted by Prince Ahmet, who revealed himself to be a Templar, and Ezio escaped Derinkuyu and made his way back to Constantinople.
- The Ottoman Assassin leader Yusuf Tazim was killed by the Byzantine Templars while trying to prevent Sofia Sartor's abduction in her bookshop.
- The Ottoman Assassins, led by Ezio Auditore da Firenze, besieged the Templars' hideout at the Harbor of Theodosius. Ezio was forced to spare Prince Ahmet to save Sofia Sartor's life.
- Ezio Auditore da Firenze and Prince Ahmet met on the wall connected to Galata Tower, where Ezio handed Ahmet the keys. Ahmet tricked Ezio and ordered Sofia's execution, though Ezio saved her from strangulation.
- April 25:
- May: Ezio Auditore da Firenze unlocked the library of Altaïr Ibn-La'Ahad in Masyaf, though he decided to leave the Apple of Eden locked away. Alongside Desmond Miles, in 2012, Ezio witnessed a Precursor message about the Toba catastrophe.
- June: Sofia Sartor sold her bookshop to the Ottoman Assassins, who hid the Masyaf Keys in the cistern beneath the bookshop. Ezio Auditore da Firenze became engaged to Sofia, and left for Italy.
- February: Ezio Auditore da Firenze announced his impending retirement as Mentor of the Italian Brotherhood of Assassins, and declared his favored successor to be Lodovico Ariosto.
- The Mentor Ezio Auditore da Firenze placed the English Assassin Hiram Stoddard in charge of a mission to take down a Templar plot, accompanied by Giovanni Borgia, based on intel delivered by Michelangelo.
- The Assassins Giovanni Borgia and Hiram Stoddard ambushed the Templar Dei Petrucci while the latter was transporting an Apple of Eden, but the Assassins were eventually held back and Petrucci escaped.
- In an act of jealousy, Giovanni Borgia revealed Hiram Stoddard's adultery to the latter's lover, Elena, resulting in a violent confrontation on a rooftop. After being hit in the head by Hiram, Giovanni became possessed by Consus. Elena died in the skirmish, angering Hiram and drastically altering his personality.
- The rogue Assassin Hiram Stoddard attempted to steal an Apple of Eden from a remote Assassin hideout in Greece, before being stopped and overpowered by Giovanni Borgia.
- February: Hernán Cortés and an army of Spanish soldiers – including the Assassin Giovanni Borgia, posing as "Botello", on a quest to find a Piece of Eden – landed on the Yucatán Peninsula to explore Mexico.
- May 2: Leonardo da Vinci passed away in the Clos Lucé in Amboise, France, with his friend Ezio Auditore da Firenze and Niccolò Machiavelli at his side; King Francis I of France would spread stories about being at Leonardo's deathbed as propaganda.
- November 8: The Spanish expedition party led by Hernán Cortés was welcomed into Tenochtitlan by the Aztec ruler, Moctezuma II.
- May 20: The Aztecs in Tenochtitlan were massacred by the Spanish during the Toxcatl feast, in response to the gruesomeness of the feast and to plunder Aztec riches. In the chaos, Giovanni Borgia stole a Crystal Skull from an Aztec priest.
- June 29: Moctezuma II, used as a puppet by the Spanish to calm the Aztec people, was killed after one of his subjects struck his head with a stone.
- June 30: Hernán Cortés and his Spanish soldiers made a narrow escape from Tenochtitlan during the night, known as the Night of Sorrow, during which many Spanish soldiers were slaughtered by the pursuing Aztecs.
- April 20: The Zhengde Emperor of China died without an heir, leaving the country in a state of chaos. The Chinese Assassins took the opportunity to infiltrate the imperial palace and rescued several of the Emperor's concubines, including Shao Jun.
- May 27: Zhu Houcong became the Jiajing Emperor, with aid from the Templars, succeeding his cousin, the Zhengde Emperor.
- July: The Spanish conquistador Juan Ponce de León died in Havana, Cuba, after having been shot with a poisoned arrow by the Assassins in Florida for failing to heed Miguel Ramon Carlo de Lugo's warning to give up his search for the Fountain of Youth.
- August: The Jiajing Emperor of China ordered a purge of his enemies, under the influence of the Eight Tigers, a group of Templar eunuchs. This resulted in the near eradication of the Chinese Assassin Brotherhood, and the survivors fled to other countries in the west.
- November: Shao Jun met Ezio Auditore da Firenze in his villa in Tuscany. Ezio agreed to teach her how to rebuild the Order, and the two of them fought off Chinese imperial guards in Florence and Ezio's villa. Ezio entrusted Jun with a Precursor box before her departure.
- November 30: Ezio Auditore da Firenze died in Florence, as a result of the battle wounds he received during his career as an Assassin, while visiting the city with his wife Sofia and daughter Flavia.
- The Assassin Shao Jun returned to China at the request of Wang Yangming, the new leader of the Chinese Assassins, to rebuild their Brotherhood and kill the Eight Tigers.
- Shao Jun allowed herself and her Precursor box to be captured by the Eight Tigers. Jun escaped imprisonment and killed Gao Feng, while Wang Yangming killed Ma Yongcheng.
- Yu Dayong, a member of the Eight Tigers, was killed by the Assassin Shao Jun in the port city of Macau. In retaliation for the attack, Qiu Ju ordered the port set ablaze.
- Giovanni Borgia discovered the formulae for the philosopher's stone from the "True Magic" chapter of the Book of Abraham in the study of the Swiss scientist Bombastus, when Giovanni took his Crystal Skull to Bombastus for study.
- January 9:
- Qiu Ju, one of the Eight Tigers, was killed in a duel with the Assassin Shao Jun in the Forbidden City, after Shao Jun was ambushed by the Templars during a meeting with her friend Empress Zhang.
- Altan Khan, ruler of the Tümed Mongols, launched an siege on the Great Wall of China. The Assassin Shao Jun thwarted the invasion by closing the wall's gates.
- Shao Jun killed the Templar Zhang Yong, leader of the Eight Tigers, atop the Great Wall during the Mongol invasion.
- Quila, an Incan chasqui, recovered a letter detailing a plot orchestrated by Francisco Pizarro to assassinate Emperor Manco Inca Yupanqui of the Neo-Inca State.
- Quila and Gonzalo Pardo, a Spanish Assassin, were captured by the Inca nobleman Tuti Cusi on false accusations of conspiring to kill the Incan Emperor after trying to enlist his aid. They were saved by Cusi's son, Quila's ex-husband Ayar Acar.
- Quila, Ayar Acar and Gonzalo Pardo prevented an assassination attempt on Emperor Manco Inca Yupanqui by killing Tuti Cusi and his henchmen. Quila became the Emperor's personal chasqui, and was invited by Pardo to join the Assassin Order.
- June 26: The Spanish conquistador Francisco Pizarro, conqueror of the Inca Empire, was killed by the Assassins.
- The Assassin Giovanni Borgia communicated with the Jiajing Emperor through his Crystal Skull. Upon realizing the Emperor's threats, Borgia warned the Brotherhood of the danger.
- July 27: Francis Xavier, a Jesuit missionary, arrived in Japan to spread the influence of Christianity and the Templar Order.
- April 27: The Republic of Florence conquered Monteriggioni, after the Florentine exile Giovannino Zeti handed the town keys to Florence. The Medici allowed the Auditore to continue their rule of the town.
- November 17: Queen Mary I of England was killed by the Assassins, to free the people of England from her oppression.
- January 15: Queen Elizabeth I of England, successor to her half-sister Mary I, was crowned at Westminster Abbey and began her rule over England, with the aid of an Apple of Eden.
- January 23: The Jiajing Emperor, a Templar puppet, was killed by the Chinese Assassins on orders of the Mentor Shao Jun.
- July 6: Mōri Motonari, head of the Mōri clan, was assassinated by the Assassin Hattori Hanzō to allow Oda Nobunaga to conquer Chūgoku, paving the way for Tokugawa Ieyasu.
- May 13: Takeda Shingen, head of the Takeda clan, was killed in his camp during an attack by Honda Tadakatsu and the Assassin Hattori Hanzō, to obtain Shingen's Sword of Eden.
- June 21: The Battle of Gogunda was fought between the Army of the Mughal Empire and the Rajput chief Maharana Pratap Singh. Despite the Mughal Army's victory, Pratap Singh refused to recognize Mughal rule for several years until his army was defeated.
- April 19: Uesugi Kenshin, head of the Uesugi clan and a member of the Templar Order, was killed by the Assassin Hattori Hanzō.
- The Jesuit missionary Francisco Cabral was forced to resign from his post by fellow missionary Alessandro Valignano, after Cabral confronted Valignano about the latter using his position to scour Japan for Templar recruits.
- November 19: Tsarevich Ivan Ivanovich of Russia, son of Ivan the Terrible, died; the Assassins were somehow involved in his death.
- June 21: Oda Nobunaga, head of the Oda clan, was attacked by his vassal Akechi Mitsuhide at Honnō-ji; he was subsequently assassinated the Assassin and monk Yamauchi Taka to obtain his Sword of Eden, which was then transported to China by Liu Yan.
- October 26: English alchemist Edward Kelley moved with his family to Třeboň from Prague, where he worked with John Dee for Count Vilem Rožmberk; using a Crystal Ball, Kelley communicated with the Isu.
- May: John Dee left Třeboň and returned to England after an argument with Edward Kelley over the use of the Book of Abraham; Kelley started working at the court of Holy Roman Emperor Rudolf II.
- August 18: The Roanoke Colony in the New World was found deserted; the disappearance of the colony had some relation to the Assassin–Templar War.
- The Golem killed various members of the nobility and alchemists in Prague, the seat of the Holy Roman Empire; by conversing with it, Elizabeth Jane Weston prevented its attempt to kill her stepfather Edward Kelley.
- December 23: The Assassin Hattori Hanzō was killed by his longtime rival and fellow ninja, Fūma Kotarō, in Edo.
- November 1: Edward Kelley committed suicide, by jumping off the roof of Hněvín Castle, where he was imprisoned by Emperor Rudolf II of the Holy Roman Empire, for failing to create gold.
- September 18: Toyotomi Hideyoshi, the unifier of Japan, was killed by the Assassin Yamauchi Taka in Fushimi Castle.
- October 21: The Battle of Sekigahara was fought between the forces of Tokugawa Ieyasu and Ishida Mitsunari, ending in a Tokugawa victory. Ishida's vassal Shima Sakon was killed by the Assassin Yamauchi Taka.
- May–June: The second Siege of Osaka was fought between the Tokugawa shogunate and the Toyotomi clan; the Toyotomi clan was defeated, and thus the last threat to the shogunate. Many samurai, including the Assassin Hattori Masanari, perished in the conflict.
- September 3: The Battle of Worcester was fought between the English Royalists and Parliamentarians, resulting in a victory for Parliament and the end of the English Civil War. Prince Charles II fled England and lived in exile in mainland Europe.
- May 29: Prince Charles II returned to London after years of exile in France, the United Provinces and Spanish Netherlands.
- May 29: King Charles II of England, Scotland and Ireland was crowned at Westminster Abbey; a man wielding a Piece of Eden was present at the coronation.
- September 2: The Great Fire of London started, destroying thousands of buildings in the medieval City of London, ending on September 5.
- April: Thom Kavanagh, a Sage from Boston, was captured by the Mentor of the Caribbean Assassins, Bahlam, to prevent him from falling under Laureano de Torres y Ayala's Templar influence.
- King James II of England was overthrown in the Glorious Revolution, which saw William III and his wife, James' daughter Mary II succeed him as monarchs, ensuring a Protest regime.
- Louis-Joseph d'Albert de Luynes and three other Assassins attempted to recruit Julie d'Aubigny, but d'Aubigny attacked and defeated them. After a second attempt, she agreed to join the Brotherhood and started training under Maréchal.
- February: The Salem witch trials started, during which people accused of witchcraft in Massachusetts stood trial to face execution in Salem Village, under the supervision of the Templars William Stoughton and Samuel Parris.
- June: Master Assassin Thomas Stoddard arrived in Salem from London on assignment to retrieve a Piece of Eden from the colonies.
- June 10: Bridget Bishop was hanged in Salem on suspicions of witchcraft. The Assassin Tom Stoddard bore witness to the event.
- Thomas Stoddard and his contact Jennifer Querry infiltrated a Templar warehouse, where they found several imprisoned woman in the facility's basement. They rescued Dorothy Osborne and David, after promising to lead them to the artifact, fending off several attackers in the process.
- While fleeing through the swamp, Thomas Stoddard was forced to leave Jennifer Querry and David to protect Dorothy Osborne. While carrying her, she became possessed by Consus' consciousness, who spoke to Charlotte de la Cruz reliving Stoddard's memories.
- Thomas Stoddard, Dorothy Osborne and Jennifer Querry were captured by the Templars at the Salem docks. While being interrogated, Dorothy allowed Consus to take hold of her, giving Querry the opportunity to free Stoddard. Querry was killed in the fight, causing Dorothy to commit suicide.
- William Stoughton was shot by Samuel Parris before the former could kill Thomas Stoddard, citing that the Templars' unneeded violence conflicted with their goals. Stoddard was allowed to escape, and later burried Jennifer Querry and Dorothy Osborne and took David in as his own child.
- The Great Recoinage of 1696 occured, with King William III of England attempting to replace the worn coins in circulation. Subsequently, many counterfeit couns were produced and entered circulation.
- William Lowndes, the Secretary of the Treasury in England and an Assassin, tasked fellow Assassin Omar Khaled with lending aid to Warden of the Royal Mint Isaac Newton to resolve the issue of money counterfeiters following the Great Recoinage.
- British pirate William Kidd hid his treasures in the New World – including his sawtooth cutlass on Cerros and his Ring of Eden on Oak Island – after realizing he was pursued by British authorities and the Templars.
- May 23: The British privateer William Kidd was hanged in London on accussations of piracy, after having been captured in New York.
- July 9: The War of the Spanish Succession started between the powers of Europe to determine the successor to King Charles II of Spain.
- A slave ship bound for the Americas was raided by the Assassin Omar Khaled, who managed to save all 1000 slaves aboard the vessel, but lost his own life in the process.
- April 11: The Treaty of Utrecht was signed between the belligerents of the War of the Spanish Succession, effectively ending all armed conflict between the powers of Europe. Privateers in the West Indies were no longer needed, causing many privateers to turn to piracy.
- June: The Assassin Duncan Walpole was killed by the pirate Edward Kenway, after Walpole had killed Edward's captain Abel Bramah and both ships had been destroyed near Cape Bonavista. Stealing Walpole's identity, Edward saved Stede Bonnet from British soldiers and left with him for Havana.
- Woodes Rogers, Julien du Casse and Edward Kenway, posing as the Assassin Duncan Walpole, were inducted into the Templar Order by Grand Master Laureano de Torres y Ayala.
- The Templars killed several Assassins in Havana while protecting the Sage Bartholomew Roberts from falling into their hands. That evening, Edward Kenway was caught on suspicions of freeing the Sage, and was to be sent to the British Templars with the Spanish Treasure Fleet.
- July 30: The Treasure Fleet lost eleven of its twelve vessels in a hurricane off the coast of Florida. The remaining ship, later rechristened Jackdaw, was stolen by pirate captives led by Edward Kenway and Adéwalé, and managed to escape the storm.
- September: Julien du Casse was killed by the pirate Edward Kenway in du Casse's stronghold in Great Inagua, out of fear that du Casse had recognized the Jackdaw while sailing.
- June: The French pirate Olivier "La Buse" Levasseur destroyed a vessel captained by Barnes off Devil's Rock, and rescued its captives Alonzo Batilla and Jumao, whom he rewarded with their own ship. Alonzo subsequently obtained the schooner Wanderer.
- July: Samuel Bellamy replaced Benjamin Hornigold as captain of Hornigold's pirate fleet by majority vote and Hornigold's rule to not attack British ships was neglected. Hornigold was escorted away from the pirates to another island by Alonzo Batilla.
- November: Samuel Bellamy, La Buse and Alonzo Batilla attacked a galleon of the Spanish Treasure Fleet, but were lured into a trap by Captain Francis Hume of the British Navy, a Templar.
- Alonzo Batilla recovered Laurens Prins' slaver route and destroyed Francis Hume's ship, who had attacked Samuel Bellamy on orders of Laureano de Torres y Ayala.
- Edward Kenway attacked the fort at Punta Guarico to steal Laureano de Torres y Ayala's gold, but instead devised a plan to use Torres and his gold to acquire Bartholomew Roberts from Laurens Prins, who had the Sage in his employ.
- February: Samuel Bellamy, La Buse and Alonzo Batilla set a trap for the Whydah, Laurens Prins' slave ship transporting a Piece of Eden. The Whydah and its treasure were secured, and the pirates were able to sink the attacking King George captained by Francis Hume.
- April 27: Laurens Prins was assassinated in Kingston by Edward Kenway, aiding his friend Mary Read in finishing her assassination contract after Prins refused to sell Bartholomew Roberts. Roberts managed to escape Kingston.
- May: Alonzo Batilla aided Christopher Condent in finding supplies and rum for the Pirate Republic of Nassau; La Buse fled Nassau with the Piece of Eden after discovering the Templars had infiltrated the republic.
- September: La Buse escaped from a Templar attack on an enemy ship, leaving the wreckage of his vessel Le Postillon behind; Alonzo retrieved La Buse's codebook from the Templar merchant Barnes, detailing his location to be Mayaguana.
- December: Barnes was fatally shot by fellow Templar Christopher Condent, after being unable to discern the location of Olivier Levasseur to Condent and Benjamin Hornigold.
- January: The pirates Edward Kenway and Edward Thatch, commonly known as Blackbeard, traveled to a shipwreck of the Spanish Treasure Fleet to find medicine for the people of Nassau, without success.
- March: Richard Thompson was saved from marooning on an island by Alonzo Batilla, and revealed that Olivier Levasseur had joined Edward Thatch's crew. Batilla endeavoured to catch up with Levasseur.
- April: Edward Thatch was overrun by a British Man O' War. After being saved by Edward Kenway, Thatch's men discovered a shipment of medicine from Charles-Towne aboard the Man O' War.
- May: Edward Thatch laid siege to Charles-Towne, South Carolina for a week, holding men hostage in exchange for medicine. Edward Kenway infiltrated the town, stealing the town's medicine instead.
- July 22:
- Governor Woodes Rogers of the Bahamas arrived in Nassau with Commodore Peter Chamberlaine, extending a pardon from King George I of the Great Britain to all pirates.
- Commodore Peter Chamberlaine was assassinated by Edward Kenway for threatening the Pirate Republic. Kenway and Charles Vane destroyed the British blockade of the city with a fireship.
- August: Alonzo Batilla and Olivier Levasseur retrieved their Piece of Eden and used its powers to fight off Christopher Condent. Levasseur escaped to hide the artifact from the Templars, while Batilla distracted the pursuing Governor Woodes Rogers before ultimately escaping.
- November 22: Edward Thatch was killed off the coast of Ocracoke, during a British Navy assault led by Robert Maynard. Edward Kenway and the Jackdaw managed to escape.
- November 23: Charles Vane and Edward Kenway were marooned on Isla Providencia, after Jack Rackham deposed Vane as captain and captured the Jackdaw.
- February: Edward Kenway was saved from Isla Providencia by an arriving ship, after having fought Charles Vane, who had lost his sanity on the island.
- May: The pirate Benjamin Hornigold joined the Templar Order in Kingston after accepting Governor Woodes Rogers' pardon. Edward Kenway sailed to Príncipe to save the Sage from the Templars.
- June 19: The pirate hunters John Cockram and Josiah Burgess were killed by Edward Kenway, after Kenway had saved Bartholomew Roberts from the Templars' attack. Roberts was elected as the replacement of pirate captain Howell Davis.
- Edward Kenway and Bartholomew Roberts captured the Portuguese ship Nosso Senhor da Compreensão and secured the Templars' blood vials on board. Roberts renamed the ship Royal Fortune and made it his flagship.
- Benjamin Hornigold was killed by his former friend Edward Kenway on Santanillas for betraying the Pirate Republic.
- Edward Kenway was betrayed by Bartholomew Roberts and turned in to the British authorities in Kingston, after Kenway and Roberts visited the Observatory; there, Roberts took possession of the complex' Crystal Skull.
- November 28: Mary Read and Anne Bonny were led to trial in Port Royal in Kingston, but managed to evade death by hanging by revealing their pregnancies.
- April: Edward Kenway and Anne Bonny escaped imprisonment in Port Royal, Jamaica, with the aid of the Mentor Ah Tabai; Mary Read died in prison, due to complications from childbirth. Kenway decided to join the Assassins, out of respect for Read.
- May: Governor Woodes Rogers of the Bahamas was severely wounded by the pirate Edward Kenway during a party in Kingston. Rogers survived his wounds, and later returned to England.
- November 28: The French bandit Cartouche was saved from death by his lover Mireille, the leader of the French Assassins, who managed to fake his execution. Cartouche joined the Assassin Brotherhood.
- February 10: Bartholomew Roberts was killed by the pirate Edward Kenway near Príncipe on orders of Ah Tabai, taking possession of the Crystal Skull and the blood vials. Upon Roberts' request, Edward destroyed his body to prevent it from falling into Templar hands.
- El Tiburón, Laureano de Torres y Ayala's right hand man, was killed by the pirate Edward Kenway in Castillo de San Salvador de la Punta in Havana.
- September 1: Laureano de Torres y Ayala, Grand Master of the Caribbean Templars, was killed inside the Observatory in Jamaica by the pirate Edward Kenway on orders of Ah Tabai.
- October: Edward Kenway returned to England with his daughter Jennifer Scott, who had just arrived in Great Inagua, after Kenway heard news that his wife Caroline Scott had died two years earlier.
- Edward Kenway killed the Templars Emmett Scott, father of Caroline Scott, and Wilson in a warehouse in Bristol for the pain they caused his wife and parents.
- Robert Walpole, the future Prime Minister of Great Britain, pardoned Edward Kenway and his pirate crew. Walpole purchased a house in London for Kenway, introduced him to the Stephensen-Oakley family and employed his new assistant, Reginald Birch.
- Edward Kenway joined the British Brotherhood of Assassins and became their co-leader alongside Miko. He started travelling to find out more about the Isu, exploring the temples in Rome and Alamut, and found a Shroud of Eden, which he kept hidden from the world.
- The Victoire, captained by Adéwalé, ambushed a convoy of French Templar ships near Saint-Domingue, and intercepted a parcel adressed to Bastienne Josèphe in Port-au-Prince. While fleeing from the Templars, the Victoire was destroyed in a storm, and Adéwalé washed up in Port-au-Prince.
- Adéwalé formed an alliance with Bastienne Josèphe and Augustin Dieufort, leader of the Maroon rebellion against the Governor Pierre, Marquis de Fayet. Adéwalé stole the Experto Crede and made it his flagship, and helped free the colony's slaves.
- The Experto Crede protected the Vautour, a French merchant ship transporting French scientists for the French Geodesic Mission and slave spying for the Assassins and Maroons, from pirate ships.
- December 3: The Assassin Edward Kenway was killed in his family's house in London by masked men employed by Reginald Birch, Kenway's property manager and a Templar. The masked men proceeded to steal Kenway's journal, and kidnapped his daughter Jennifer.
- December 12: Haytham Kenway, son of Edward Kenway, started his tutelage under Reginald Birch on his mother Tessa's request, and left with Birch for Europe to find Jennifer.
- On orders of Governor Pierre, Marquis de Fayet, a French vessel took down a slave ship while the Experto Crede was trying to free its slaves from the French.
- July 8: Pierre, Marquis de Fayet, Governor-General of Saint-Domingue was killed by the Assassin Adéwalé in Port-au-Prince for his harsh treatment of slaves in the colony.
- February 20: The Swedish Levant Company was founded in Stockholm, as a front for the Swedish Brotherhood of Assassins.
- April 19: Haytham Kenway was formally inducted into the Templar Order. His first mission was to kill a greedy merchant in Liverpool.
- May 11: The Siege of Louisbourg started. The Assassin John de la Tour sacrificed himself fighting off the invading British forces, while Achilles Davenport and Abigail sought the safehouse of the Hermeticist Nicolas Court.
- Achilles Davenport, a former student of the Mentor Ah Tabai in the Caribbean, established the Colonial Brotherhood of Assassins in the Thirteen Colonies and assumed the title of Mentor.
- June 11: Juan Vedomir, a Templar assigned to decode Edward Kenway's journal, was killed by Haytham Kenway for working with the Assassins. Haytham took the journal with him, and later brought it to Reginald Birch in the Templar headquarters in Prague.
- June 19: Nāder Shāh, the ruler of Iran and owner of the Koh-i-Noor, was killed by a group of assassins led by the Assassin Salah Bey. The Koh-i-Noor fell into the hands of Ahmad Shāh Durrānī.
- September: During the retreat from the Siege of Bergen op Zoom, Braddock ordered the execution of a family asking for passage on his boat. Haytham Kenway's relationship with Braddock deteriorated and Haytham feared he was turning away from the Templar Order.
- The brig Aquila was constructed in Brest, France on orders of the Assassin Council in Paris. The ship would become the flagship of the Assassin Navy within several years.
- November 21:
- The Assassin Vendredi discovered and disturbed the Piece of Eden in the Isu Temple near Port-au-Prince, on orders of François Mackandal, triggering an earthquake that destroyed the city. Vendredi was killed by the Templar Lawrence Washington during his escape.
- Master Templar Lawrence Washington stole a Precursor box and the manuscript from the camp of François Mackandal in Haiti.
- January: The Assassins Liam O'Brien and Shay Cormac rescued a group of allied smugglers from the Royal Navy with the aid of the Chevalier de la Vérendrye. Shay stole the Royal Navy's sloop Morrigan.
- March: The Assassin Adéwalé met the Mentor Achilles Davenport of the Colonial Brotherhood at the Davenport Homestead to inform him that their Precursor box and manuscript had been shipped to North America. Adéwalé returned to Haiti with supplies to help victims of the earthquake.
- April: After meeting with their associate Le Chasseur, the Assassins discovered that the Precursor manuscript was in the possession of Lawrence Washington.
- July: Master Templar Lawrence Washington was killed by the Assassin Shay Cormac outside Washington's estate in Mount Vernon.
- June 25: Haytham Kenway abducted Lucio Albertine to help his mother, the captive Monica, a codebreaker and Assassin associate, decode Edward Kenway's journal for the Templars. Haytham stole the Hidden Blades of Miko, Lucio's Assassin bodyguard, while engaged in combat with him.
- April 18: Haytham Kenway assassinated Miko during a performance of The Beggar's Opera at the Theatre Royal in London, and retrieved the Grand Temple's key.
- April 20: Haytham Kenway boarded the Providence to start his 72-day long journey to the New World to find the Grand Temple. During the journey, Haytham killed the Assassin sailor Louis Mills and managed to evade capture by the Aquila, luring it to destruction in the storm.
- May: The Templar Samuel Smith was killed by the Assassins Shay Cormac in Terra Nova. Cormac retrieved the Precursor box from Smith.
- The Templar James Wardrop was assassinated by the Assassin Shay Cormac during the Albany Congress in Albany, New York. Cormac retrieved the Precursor manuscript from Wardrop.
- Benjamin Franklin, with the use use of electricity and help of the Assassins Shay Cormac and Hope Jensen, made the Precursor box functional. Reading the manuscript, the box displayed a holographic map of the globe, highlighting Port-au-Prince, Lisbon and the Arctic.
- July 8: Haytham Kenway arrived in Boston, Massachusetts and formally took up the position of Grand Master of the Colonial Templars, recruiting Charles Lee, William Johnson and Thomas Hickey.
- July 10: Haytham Kenway and Charles Lee rescued the surgeon Benjamin Church from capture by the slaver Silas Thatcher, and recruited him into the Colonial Templars.
- July 13: Haytham Kenway recruited the soldier John Pitcairn into the Colonial Templars, after attacking and threatening his former comrade Edward Braddock.
- July 14: The Colonial Templars besieged the fortress of Southgate in Boston, killing the slaver Silas Thatcher in the process.
- November 15: Haytham Kenway formed an alliance with Kaniehtí:io, a Kanien'kehá:ka woman who could lead him to the Grand Temple, by planning a joint attack on Edward Braddock.
- July 9: General Edward Braddock was fatally wounded by Haytham Kenway during the Braddock Expedition, with aid from Kenway's fellow Templars, Kaniehtí:io, the Abenaki, Shawnee and Lenape, for his betrayal of the Templar Order's principles. Braddock died four days later.
- November 1: The Assassin Shay Cormac disturbed the Piece of Eden in the Temple beneath the Carmo Convent in Lisbon, causing an earthquake that destroyed the city and killed thousands of citizens.
- The Assassin Shay Cormac stole the Precursor manuscript from the Davenport Homestead, believing that Achilles knew about the Seismic Temples, but was attacked by the Mentor. Cormac jumped off a cliff in the Homestead after having been cornered by the Assassins.
- Shay Cormac was nursed back to health by Barry and Cassidy Finnegan at the request of Colonel George Monro, a Templar. On the insistence of Monro, Cormac started financing the renovations of New York.
- Shay Cormac rescued Christopher Gist from hanging by the Assassin-affiliated gangs in New York, from whom he reclaimed the Morrigan, and seized Fort Arsenal as his new home.
- Le Chasseur, a smuggler and ally of the Assassin Order, was killed during a Templar attack on Fort La Croix by Shay Cormac.
- May 1: Jeanne fled from New Orleans to a working colony in Chichen Itza, Mexico with the aid of her former husband Philippe Olivier de Grandpré's new wife Madeleine de L'Isle, leaving her daughter Aveline de Grandpré in the care of Madeleine.
- August 10: Colonel George Monro escaped an Abenaki ambush led by the Assassin Kesegowaase with the aid of Shay Cormac, after being released following his surrender at the Siege of Fort William Henry.
- September 17: Jennifer Scott was rescued by Haytham Kenway and Jim Holden from servitude at the palace of Governor As'ad Pasha al-Azm of Damascus, after having spent years as a concubine at Topkapı Palace.
- October 9: Grand Master Reginald Birch was killed in his chateau near Troyes, France by Jennifer Scott, with the help of her brother Haytham Kenway, for having been responsible for their father's death and selling her into slavery.
- November 3: The Assassin Kesegowaase was killed by Shay Cormac. The Templar George Monro was killed in a fire lit by the Assassin Liam O'Brien.
- January 20: François Mackandal, Mentor of the Assassin Brotherhood in Saint-Domingue, was publicly executed after attempting to poison the white inhabitants of the colony. His pupils Agaté and Baptiste fled to Louisiana.
- June 8–July 26: The Siege of Louisbourg was fought between the Royal Navy and French Navy. The Templars, using James Cook's HMS Pembroke, thwarted an attack by the Experto Crede captained by the Assassin Adéwalé during the attack.
- The Assassin Adéwalé was killed by Shay Cormac at Vieille Carrière during a confrontation between the Assassin, Cormac and Grand Master Haytham Kenway.
- October: The Assassin Hope Jensen was killed by Shay Cormac following an altercation inside her mansion in New York. The Assassin Liam O'Brien returned to Achilles Davenport with the location of another temple retrieved from their Precursor box.
- November 12: Aveline de Grandpré was recruited into the Assassin Brotherhood by the Mentor Agaté. After several months of training, she was formally inducted into the Order.
- The Chevalier de la Vérendrye, an Assassin, was killed by the Templar Shay Cormac in the North Atlantic during an expedition to distract the Templars from their search for the Precursor temple in the Arctic.
- March: An Isu temple in the North Atlantic created an earthquake after its Piece of Eden was disturbed during a confrontation between Achilles Davenport, Liam O'Brien, Haytham Kenway and Shay Cormac. Liam was killed by Shay, and Achilles was shot in the leg by Haytham.
- November 2: The Kanien'kehá:ka village of Kanatahséton was set aflame by George Washington of the British Army, killing many villagers including Kaniehtí:io, after her son Ratonhnhaké:ton was attacked by the Colonial Templars led by Charles Lee.
- July 17: Emperor Peter III of Russia was assassinated, possibly by the Assassin Brotherhood. His wife, Catherine the Great, became Empress of Russia.
- The Colonial Templars effectively destroyed the Colonial Brotherhood by wiping out nearly all of its remaining members. Achilles Davenport entered a life of exile in the Davenport Homestead.
- February 4: Jean-Jacques Blaise d'Abbadie, the Governor of Louisiana, was assassinated by the Assassin Aveline de Grandpré for colluding with the Templar Order to hand over the colony to Templars in the Spanish government.
- June 23: Baptiste, the leader of a Maroon smuggling operation impersonating his former Mentor François Mackandal, was killed by the Assassin Aveline de Grandpré for colluding with the Templar Order, on orders of Baptiste's former Brother, Agaté.
- October 27: Antonio de Ulloa, the Spanish Governor of Louisiana, was attacked by the Assassin Aveline de Grandpré while trying to escape New Orleans during the Louisiana Rebellion. Aveline spared the Governor's life and retrieved a map leading to a Templar work camp in Chichen Itza.
- Aveline de Grandpré killed the Templar Rafael Joaquín de Ferrer in Isu ruins underneath Chichen Itza, where the Templars had set up a working colony. Aveline also obtained half of a Prophecy Disk, and was reunited with her mother Jeanne.
- October 4: Ratonhnhaké:ton, son of Haytham Kenway and Kaniehtí:io, came into contact with Juno through the Clan Mother's Crystal Ball, who informed him that he needed to join the Assassin Order in order to protect his village from destruction.
- October 29: Achilles Davenport, former Mentor of the Colonial Assassins, took Ratonhnhaké:ton under his tutelage after seeing him defend himself against a group of attackers.
- March 5: The Boston Massacre occurred, causing British colonists to attack British Army soldiers, after Charles Lee ignited the crowd by firing a shot on orders of Haytham Kenway. Ratonhnhaké:ton, who was blamed for the event, was able to escape with help of Samuel Adams.
- March 18: Ratonhnhaké:ton received his pair of Hidden Blades from Achilles Davenport, and started reconstruction on the Aquila, anchored in the harbor of the Davenport Homestead.
- The Spanish Templar Diego Vázquez's attempts to take over smuggling operations in the Louisiana Bayou were disrupted by the Assassin Aveline de Grandpré, with the aid of Agaté, Gérald Blanc, Élise Lafleur and Roussillon.
- Aveline de Grandpré returned to Chichen Itza, where she made peace with her mother Jeanne and received another half of a Prophecy Disk using a map leading to another Isu ruin.
- November 6: Ratonhnhaké:ton aided the Sons of Liberty in defying William Johnson's smuggling operation by destroying his shipments of tea in Boston's harbor, to disrupt William Johnson's purchase of indigenous American land.
- December 3: Stephane Chapheau killed one of William Johnson's tax collectors, with aid from Ratonhnhaké:ton, and started his tutelage under the Assassin.
- December 16: The Boston Tea Party occured, in which members of the Sons of Liberty movement and Ratonhnhaké:ton dumped British shipments of tea into Boston's harbor in defiance of British authority.
- July 11: William Johnson was killed by Ratonhnhaké:ton in front of Johnson Hall, amidst a violent business deal to purchase the lands of clans of the Iroquois Confederacy.
- April 18: Members of the Sons of Liberty rode out to warn British colonists of an imminent attack by the British Army; with aid from Ratonhnhaké:ton, Paul Revere warned their allies in Lexington and then proceeded to Concord with William Dawes, though the two men were detained by British soldiers.
- April 19: The British Army and colonial militia engaged at the Battles of Lexington and Concord, where the militia under leadership of John Parker, James Barrett and Ratonhnhaké:ton managed to emerge victorious.
- June 16: The Continental Army was formed by the Patriot colonists. The Continental Congress appointed George Washington to be its Commander-in-Chief.
- June 17: The Continental Army and British Army fought at the Battle of Bunker Hill at Charlestown, Massachusetts. British Army commander John Pitcairn was assassinated during the battle, though the British managed to claim victory and captured Charlestown.
- Eseosa, grandson of Adéwalé, began to rebuild the Assassin Brotherhood in Saint-Domingue, recruiting Dutty Boukman, Toussaint Brédá, Georges Biassou, Jean-François Papillon and Jeannot Bullet into his ranks.
- George Davidson, an African slave, joined up with a group of American revolutionaries and escaped to the Thirteen Colonies with the help of Aveline de Grandpré, on request of Madeleine de L'Isle.
- June 28: Ratonhnhaké:ton was led in New York to hang after having been imprisoned alongside the Templar Thomas Hickey while trying to prevent the latter's assassination of George Washington. With aid from Achilles Davenport and Haytham Kenway, Ratonhnhaké:ton escaped and killed Hickey.
- July 4: The Declaration of Independence was signed by the Founding Fathers, proclaiming independence of the Thirteen Colonies as the United States from Great Britain.
- September 21: The Great Fire of New York started, destroying the area west of Broadway in the city.
- October 13:
- December 25: Continental Army forces led by George Washington and accompanied by Ratonhnhaké:ton crossed the icy Delaware River to launch a surprise attack on Hessian forces at Trenton, New Jersey.
- December 27: The Assassin Charles Dorian was killed by the Templar Shay Cormac in the Palace of Versailles, after Charles was entrusted with a Precursor box at an Assassin meeting.
- Ratonhnhaké:ton recovered William Kidd's Ring of Eden from Oak Island after having obtained all pieces of Kidd's map.
- George Davidson, who had become a Templar fighting in Lord Dunmore's Ethiopian Regiment, was killed by Aveline de Grandpré with aid from Ratonhnhaké:ton. From Davidson, Aveline was able to discern that the Company Man was Madeleine de L'Isle.
- Agaté committed suicide after having been bested by Aveline de Grandpré when he attacked her upon hearing news of the Company Man's identity.
- Madeleine de L'Isle was killed by Aveline de Grandpré in Saint Louis Cathedral during her feigned induction into the Templar Order. After her stepmother's death, she activated the Prophecy Disk and witnessed a recording of Eve's election to leader of the human rebellion from around 75010 BC.
- January 7: Haytham Kenway and Ratonhnhaké:ton formed an alliance to pursue Benjamin Church, who had betrayed both the Templar Order and the Continental Army, stealing several of the Army's supply crates.
- January 26: Haytham Kenway and Ratonhnhaké:ton besieged the old Smith and Company Brewery in pursuit of Benjamin Church, though instead found a decoy of Church and were attacked by his henchmen, resulting in the brewery being set aflame.
- March 7: Benjamin Church was killed by Haytham Kenway and Ratonhnhaké:ton aboard his ship off the coast of Martinique, where the pair recovered the stolen supplies of the Continental Army.
- March 17: Admiral Nicholas Biddle of the Continental Navy, a Templar, was killed by Ratonhnhaké:ton on the Caribbean Sea, by destroying Biddle's ship the Randolph.
- June 16: Haytham Kenway and Ratonhnhaké:ton attacked and captured several British soldiers in New York to discern the British Army's plans, learning that they planned to march from Philadelphia to New York.
- June 17: George Washington ordered an attack on the village of Kanatahséton after receiving reports of indigenous tribes allying with the British; Ratonhnhaké:ton managed to hold off the attack, but was forced to kill his friend Kanen'tó:kon.
- June 28: The Continental Army, led by the Marquis de Lafayette and aided by Ratonhnhaké:ton, fought the British Army at the Battle of Monmouth in an attempt to stop their march on New York.
- September 24: Major General Benedict Arnold betrayed the Continental Army with help from John André, and attempted to surrender the garrison at West Point to the British, resulting in the Battle of West Point. Ratonhnhaké:ton ensured the Patriots' victory, but Arnold escaped by boat.
- September 5: The French Navy, aided by the Aquila, defeated the British Navy at the Battle of the Chesapeake; in exchange for Ratonhnhaké:ton's aid, the French Navy shelled New York with ships for the Assassin's attack on Fort George.
- September 16: Haytham Kenway was killed by his son Ratonhnhaké:ton, who planned to eliminate Charles Lee instead, during his infiltration of Fort George, which was besieged by the French Navy.
- October 19: The Continental Army claimed victory at the Siege of Yorktown, effectively winning the American Revolutionary War; George Washington retrieved an Apple of Eden at Yorktown.
- October 2: Charles Lee was killed by Ratonhnhaké:ton in the Last Drink tavern in Monmouth, after the Assassin had pursued Lee through New York and Boston, taking the Grand Temple's key.
- April: Ratonhnhaké:ton came into contact with Juno through his village's Crystal Ball, who told him to hide the Grand Temple's key somewhere safe; the village's inhabitants had been forced to migrate as their land had been sold by the new government.
- September 3: The Treaty of Paris was signed between delegates of Great Britain and the Thirteen Colonies, formally ending the American Revolutionary War and establishing the United States.
- November 25: The last remaining troops of the British Army departed from the new free and independent State of New York in the United States on Evacuation Day.
- Doctor Edmund Judge, a Templar, was killed by the Assassin Aveline de Grandpré in Newport, Rhode Island, in order to recruit Patience Gibbs into the Ratonhnhaké:ton's Assassin Brotherhood.
- April 30: George Washington was inaugurated as the first President of the United States at Federal Hall in New York, after a short retirement at Mount Vernon.
- May 5:
- The Estates-General gathered in Versailles, where King Louis XVI of France discussed France's economic crisis.
- François de la Serre, Grand Master of the French Templars, was killed by Charles Gabriel Sivert and Le Roi des Thunes in a Templar coup d'état orchestrated by François-Thomas Germain. De la Serre's adoptive son Arno Dorian was arrested for the murder.
- July 14: The Bastille in Paris was stormed and captured by the Parisian militia, signalling the start of the French Revolution. The Assassin Pierre Bellec and Arno Dorian escaped captivity in the Bastille.
- October 5–6: The Women's March on Versailles occurred in protest against the monarchy of France. A team of Assassins, including Arno Dorian, ensured the march remained peaceful.
- January 5: Charles Gabriel Sivert, baron de l'Espérance, a Templar, was killed by the Assassin Arno Dorian in the Notre-Dame in Paris.
- January 19: Le Roi des Thunes, the leader of the Cour des Miracles and a Templar, was killed by the Assassin Arno Dorian. The Marquis de Sade became the new leader of the Cour.
- March 31:
- Arno Dorian rescued François-Thomas Germain, secretly the new Templar Grand Master, after he feigned capture by the Templars inside his silversmith workshop. Germain falsely accused Chrétien Lafrenière of having commissioned the pin that killed François de la Serre.
- The Templar Chrétien Lafrenière was killed by Arno Dorian during a meeting between his faction of conservative French Templars and members from other European branches.
- April 2: Honoré Gabriel Riqueti, comte de Mirabeau, Mentor of the French Assassins, was poisoned by fellow Assassin Pierre Bellec because of his willingness to work with the Templars. Bellec attempted to frame the Templar Élise de la Serre for the murder.
- August 14: Dutty Boukman held a religious ceremony at Bois Caïman, prophesizing that Jean-François Papillon, Georges Biassou and Jeannot Bullet would become leaders of a revolution to free the slaves of Saint-Domingue.
- August 21: The Haitian Revolution ignited; led by members of the Assassin Brotherhood, the slaves of Saint-Domingue rose up in revolt against their French masters.
- Dutty Boukman was captured in battle with the French Army near Acul and publicly beheaded by General Rouxel. The Assassins Elsie and Fabien were initially assigned to save Boukman, but were ordered to desist to let Boukman's death inspire a revolution.
- After repeatedly massacring white colonists and his own men, Jeannot Bullet was ordered to death by Eseosa for breaking the tenets of the Creed.
- August 10: Tuileries Palace, the residence of King Louis XVI, was stormed by an armed mob. The Assassin Arno Dorian retrieved the King's correspondence with his late Mentor Mirabeau and Napoleon retrieved an Isu temple key from the King's secret hiding place.
- September 2: A team of Assassins, including Arno Dorian, aided Georges Danton's attempt to stop an Austrian spy ring by killing the Comte and Vicomte de Gambais.
- January 21: King Louis XVI of France was executed by guillotine in Paris, as decreed by the National Assembly with the Templars' influence. Arno Dorian and Élise de la Serre made a failed assassination attempt on Grand Master François-Thomas Germain.
- August 29: The French civil commissioner of Saint-Domingue, Léger-Félicité Sonthonax, declared all slaves in the colony to be freed men.
- July 28:
- Maximilien de Robespierre, a French politician and Templar, was executed by guillotine in the Place de la Révolution.
- François-Thomas Germain, Grand Master of the French Templars, was killed by Arno Dorian in the Templar crypt beneath the Temple in Paris. Before his death, Germain killed Élise de la Serre using the Sword of Eden.
- August 9:
- Arno Dorian entered the Saint-Denis Temple, where he killed Philippe Rose and retrieved the Head of Saint-Denis. After using the Head to escape, Arno retrieved an Apple of Eden from the artifact and sent it to Al Mualim in Cairo, Egypt.
- Napoleon Bonaparte was arrested and placed under house arrest for supporting Maximilien Robespierre during the French Revolution and stealing a small army to search for an artifact in Franciade.
- August 20: Napoleon Bonaparte was released from house arrest due to his powerful influence.
- October 5: The royalist uprising of 13 Vendémiaire was suppressed by the French Republic under leadership of Paul Barras and Napoleon Bonaparte. Bonaparte earned infamy for attacking the royalists in Paris with cannons.
- August 24: Toussaint Louverture expelled Léger-Félicité Sonthonax from Saint-Domingue and became de facto ruler of the colony.
- May 19: Napoleon Bonaparte embarked from Toulon on an expedition to Egypt and Syria, secretly with intention of acquiring the Apple of Eden from the Saint-Denis Temple.
- July 15: A soldier of the French expedition in Egypt discovered the Rosetta Stone, a stele inscribed with a decree issued at Memphis. The stele was missing part of the first script pertaining to the Assassins.
- August 24: Napoleon Bonaparte set sail for France from Egypt, after having successfully retrieved the Apple of Eden of the Saint-Denis Temple.
- November 9: Napoleon Bonaparte established himself as the new ruler of France as First Consul during the coup of 18 Brumaire.
- December 24: An attempt on the life of Napoleon Bonaparte using the Machine Infernale, known as the plot of the rue Saint-Nicaise, was thwarted by a team of Assassins including Arno Dorian.
- July: Toussaint Louverture captured the Spanish colony of Santo Domingo, with aid from Eseosa, becoming the leader of Hispaniola and freeing all slaves across the island.
- May: Toussaint Louverture surrendered to General Charles Leclerc, sent by his brother-in-law Napoleon Bonaparte, who falsely claimed that France had no intention of restoring racial hierarchy in Saint-Domingue.
- November 1: Charles Leclerc died of poisoning by Eseosa, though his cause of death was believed to be yellow fever.
- November 18: Jean-Jacques Dessalines, one of Toussaint Louverture's lieutenants, defeated General Rochambeau at Vertieres. Rochambeau pulled out of Vertieres at night, knowing the colony was finally lost to France.
- January 1: Jean-Jacques Dessalines declared himself leader of the free republic of Saint-Domingue, and subsequently exterminated thousands of white people living in the country.
- March 1: Eseosa started training under Ratonhnhaké:ton at the Davenport Manor in Massachusetts in preparation for his assassination of Jean-Jacques Dessalines for his tyranny over Saint-Domingue.
- August: Napoleon Bonaparte and Arno Dorian entered the crypt beneath the Temple in Paris, and buried the remains of François-Thomas Germain in the Parisian catacombs.
- January: The Château Clique – leaders of the Templar Order in Lower Canada – arrested several journalists, including the Assassin Ludger Duvernay, for publishing articles accusing the Canadian administration of serving the Château Clique. Duvernay was freed by the Assassins.
- March 8: The Assassin Ludger Duvernay founded the Saint-Jean-Baptiste Society in opposition of the Château Clique.
- June 24: The first Saint-Jean-Baptiste Day was celebrated in the gardens of John McDonnell's house in Montreal, where a Templar agent killed one of McDonnell's servants.
- June 27:
- The Assassin Arbaaz Mir and Raza Soora retrieved the Koh-i-Noor from the Amritsar Temple underneath the summer palace of Ranjit Singh, after being tasked by the Mentor Hamid to protect it from the Templars.
- Maharaja Ranjit Singh of the Sikh Empire was fatally poisoned by William Hay Macnaghten and Templar General Francis Cotton to help the British Empire conquer India, secretly under the Templar banner.
- Princess Pyara Kaur activated the Koh-i-Noor, causing her to temporarily serve as a vessel for the Isu Durga. Telling humanity to stand united, the Precursor was shot at by Francis Cotton, instead destroying the diamond. Enraged, the Precursor released a burst of energy, killing Cotton.
- Hamid, Mentor of the Indian Brotherhood, was taken captive by the Templars William Sleeman and Alexander Burnes and robbed of the Koh-i-Noor diamond, before being freed by Arbaaz Mir.
- William Sleeman acquired the location of the Herat Temple in Afghanistan from using their Precursor box alongside the Koh-i-Noor in the Amritsar Temple. Sleeman accidentally caused the destruction of the Amritsar Temple while shooting at Arbaaz Mir.
- Arbaaz Mir pursued the Templars to Herat in Afghanistan, where he located and infiltrated the temple but was captured by the Templars. Held prisoner by Alexander Burnes at Katasraj Temple, Arbaaz escaped, retrieved the Precursor box and Koh-i-Noor from the Templars, and was allowed to flee after beating Burnes in a duel.
- William Sleeman took control of the Summer Palace in Amritsar and held Arbaaz Mir's lover Pyara Kaur prisoner. Arbaaz infiltrated the palace and confronted Sleeman, securing Pyara's safety by trading her for the Precursor box and Koh-i-Noor. Pyara stabbed Sleeman, allowing Arbaaz to retrieve the Koh-i-Noor.
- Arbaaz Mir handed the Koh-i-Noor over to Ethan Frye of the British Brotherhood of Assassins to keep the artifact safe in the United Kingdom.
- March 29: The Sikh Empire fell at the end of the Second Anglo-Sikh War. Control of the region fell to the British Templars, in the name of the British Empire.
- John Sutter, a pioneer in the California Gold Rush, was ambushed by a member of the Assassin Brotherhood, who forced him to return the gold he obtained through the labour of the Maidu people.
- April 12: The American Civil War broke out, splitting the United States into the Union led by President Abraham Lincoln and supported by the Assassins and the Confederacy (otherwise known as the Confederate States) led by Jefferson Davis, who was supported by the Templars.
- July 4: General Ulysses S. Grant ensured a victory for the Union States at the Siege of Vicksburg, gaining the attention and support of the Assassin Brotherhood.
- The Mentor of the American Brotherhood tasked Varius with retrieving a Dagger of Eden from the Aztec Club and bringing it to General Ulysses S. Grant.
- The Templar agent "Cudgel" Cormac stole the artifact from the Aztec Club after a struggle with the Assassin Varius, intending to take it back to Grand Master William M. Tweed.
- Varius and his new apprentice Eliza stole the Dagger of Eden back from Cudgel Cormac before it was passed on to Grand Master Tweed. Eliza successfully brought the artifact to General Ulysses S. Grant.
- November 19: President Abraham Lincoln of the United States delivered the Gettysburg Address in commemoration of the fallen soldiers at the Battle of Gettysburg.
- April 26: John Wilkes Booth, a Templar affiliate, was killed by the Assassins for the murder of President Abraham Lincoln of the United States.
- Emperor Napoleon III of France sends French Army officer and Assassin Jules Brunet to train the troops of the Tokugawa shogunate as part of a diplomatic military mission.
- A samurai from the Fukuoka Domain murders British sailors Robert Ford and John Hutchings of the HMS Icarus for drinking and sleeping near the tea house. This incident would become known as the Icarus affair and it would cause diplomatic tensions between the Tokugawa shogunate and the United Kingdom, the latter of which wanted the local authorities to arrest the Kaientai as they deemed them responsible for the deaths of Ford and Hutchings. British diplomat and Templar Harry Parkes would later negotiate with Tokugawa commissioners from the Tosa domain led by Goto Sojiro to convict the Kaientai, but a lack of sufficient evidence meant that the investigation would be moved to the city of Nagasaki (the site of the Icarus affair). Eventually, all charges against the Kaientai were dropped.
- In the aftermath of the Icarus affair, Jules Brunet met shogun Tokugawa Yoshinobu in his private quarters in Edo, assuring him that the French and Japanese Brotherhoods will support the shogunate against the Templar-backed Imperial Court in Kyoto. However, Yoshinobu was ready to concede as British demands were backed by the Emperor, against the wishes of Brunet. The discussion was cut short when a spy attempted to assassinate Yoshinobu only for Brunet to stop it although he was unable to catch him since he escaped through the window.
- November: Yoshinobu would eventually concede to the British and the Imperial Court by abdicating the title of shogun.
- Brunet tasked his Japanese contact, Matsuo, to mobilize all Assassin agents on the island in order to ensure the victory of the Tokugawa shogunate and their allies as war became inevitable. Disheartened by Yoshinobu's willingess to concede to the Imperials and the British, Brunet hoped that a republic would blossom in Japan if the Tokugawa forces were to win.
- January 27-31: Imperial and Shogunate forces clash near the Kyoto ward of Fushimi during the Battle of Toba–Fushimi. It ended in a decisive Imperial victory. This battle marks the beginning of the Boshin War between the Imperial Court and the Tokugawa shogunate. Unbeknownst to the soldiers of both sides, a 16-year old girl named Shiba Atsuko had disguised herself as a man to watch over her nervous and cowardly brother Shiba Itsuka.
- February 10:
- Rupert Ferris, owner of Ferris Ironworks and Templar, was killed by the Assassin Jacob Frye in Croydon, England. Jacob's escape from the Templars resulted in a train crash outside Croydon.
- Sir David Brewster, a Templar scientist, was killed by the Assassin Evie Frye in Croydon, England, during an experiment on an Apple of Eden that destroyed his laboratory and the artifact.
- February: Jacob and Evie Frye left for London to retake the city from Grand Master Crawford Starrick, and met with Henry Green. They became acquianted with their allies Charles Dickens, Frederick Abberline, Clara O'Dea and Alexander Graham Bell.
- March 4: Ulysses S. Grant was sworn in as the 18th President of the United States. His inner circle was subsequently infiltrated by the Templars, who entrusted him with a Precursor box and pages of the Voynich manuscript while simultaneously corrupting his administration.
- The Assassins Evie Frye and Henry Green recovered a disc key and document detailing a Shroud of Eden from a secret vault in the former mansion of Edward Kenway.
- Jacob Frye assassinated Dr. John Elliotson, a Templar manufacturing Starrick's Soothing Syrup, in Lambeth Asylum.
- Evie Frye recovered an Isu key hidden by Edward Kenway at the top of St. Paul's Cathedral, but lost it during a fight with the Templar occultist Lucy Thorne.
- Jacob Frye forged an alliance with Crawford Starrick's cousin Pearl Attaway, and assassinated her business rival, the Templar Malcolm Millner. After discovering Attaway was a Templar herself, Jacob assassinated her in a train carriage in Waterloo station.
- Evie Frye assassinated the Templar Lucy Thorne after infiltrating the Tower of London and recovered the Isu key.
- Philip Twopenny, the Governor of the Bank of England and a Templar, was assassinated by the Assassin Jacob Frye while the former was trying to rob his bank to transfer the money to the Templars.
- The Templars attempted to assassinate British Prime Minister Benjamin Disraeli and his wife Mary Anne Disraeli, but the plot was foiled by the Assassin Jacob Frye.
- General James Brudenell, 7th Earl of Cardigan, a Templar, was assassinated by the Assassin Jacob Frye in the Palace of Westminster for the attempt on Prime Minister Disraeli's life and to diminish Crawford Starrick's influence in British politics.
- The Assassin Jacob Frye assassinated the former Templar Maxwell Roth in a burning Alhambra Music Hall, after a short-lived alliance resulted in the near deaths of child labourers.
- The Assassins Jacob and Evie Frye infiltrated Queen Victoria's ball at Buckingham Palace and successfully stopped Crawford Starrick's attempts to murder the Queen and the other guests.
- Grand Master Crawford Starrick was assassinated by Jacob and Evie Frye in the Buckingham Palace vault after retrieving the Shroud of Eden. The Assassins left the artifact in its casing to keep it hidden from the world.
- The Assassins Jacob and Evie Frye, with the aid of Queen Victoria, stopped an upstart Templar faction from executing several terrorism attacks and eliminated their leader.
- October 6-November 6: Imperial forces lead an invasion of Aizu, a pro-Tokugawa feudal domain that sent thousands of troops for the shogunate war effort. This would become known as the Battle of Aizu. During the battle, Shiba Atsuko (now a fully-trained shinobi) was tasked with infiltrating the camp of the Imperial army besieging the Tokugawa forces at Aizu. Although Atsuko was successful in obtaining the attack plans of the enemy, her Assassin mentor Nakano Takeko was fatally shot and she was forced to decapitate her to avoid her head falling into Imperial hands. She also faced off against Lloyd and survived the fight because of her brother Ibuka, who later carried her away from the battlefield before succumbing to his wounds. Eventually she was taken away and her wounds were treated by Japanese Assassin spy Matsuo, who convinced her to join the Brotherhood after he told her about his brother's deeds, saving her and the Musashi Masamune.
- September 2: Nikola Tesla found an Apple of Eden in the wilderness after fleeing to Tomingaj in Croatia, which inspired him to pursue a life of study and innovation.
- March 13: Tsar Alexander II of Russia, who was affiliated with the Templars, was killed in a bomb attack by the Assassin Ignacy Hryniewiecki of the Narodnaya Volya, a radical faction of the Russian Assassins.
- June 6: Nikola Tesla arrived in New York City. He started working for Thomas Edison, a Templar, but left Edison Machine Works in 1885.
- December 28: The Indian National Congress, a political party that would become the principal leader of the Indian independence movement, was founded. A Sage was present during its creation.
- May 20: Several Assassin members of the Narodnaya Volya, including Aleksandr Ulyanov, were publicly hanged after a failed assassination attempt on Tsar Alexander III of Russia.
- Mina Bergson, a member of the British Assassins, was tasked to infiltrate the Hermetic Order of the Golden Dawn, and eventually married Samuel Liddell MacGregor Mathers, one of its co-founders and a Templar puppet.
- The British Assassin known as Jack the Lad, having developed an extremist view of the Creed, wrestled control of the Rooks from his mentor Jacob Frye with the help of dangerous criminals.
- August 31: Jack the Lad killed an Assassin initiate posing as the prostitute Mary Ann Nichols in Whitechapel, starting a series of murders that gave him the moniker Jack the Ripper.
- September 8: Jack the Ripper killed an Assassin initiate posing as Annie Chapman in Whitechapel.
- October: Evie Frye returned to London from India to bring Jacob aid. With help from Fredderick Abberline, she discovered Jacob was missing and started investigating the Whitechapel murders.
- November 2: Evie Frye killed brothel owner Olwyn Owers, an ally of Jack the Ripper, at Owers Manor in Cotswold.
- November 9: Evie Frye assassinated Chief Warder John Billingsworth of the Deptford prison hulks, where Jack the Ripper kept his hostages. The Metropolitan Police Service subsequently stopped Jack's kidnapping operations.
- November: Evie Frye killed Jack the Ripper inside Lambeth Asylum, after maneuvering her way through the asylum's patients set lose by Jack. Jacob Frye was subsequently released, and Evie worked together with Frederick Abberline to hide Jack's ties to the Brotherhood.
- September 30:
- October 29: The Assassin Nikolai Orelov attempted to assassinate Tsar Alexander III of Russia, a Templar ally, aboard his train bound for St. Petersburg, resulting in the Borki train disaster. The Tsar ultimately spared the Assassin's life.
- December 20: William Robert Woodman was killed by an assassin employed by his co-founders of the Hermetic Order of the Golden Dawn, Samuel Liddell MacGregor Mathers and William Wynn Westcott, after a meeting with Gustav Meyrink.
- November 1: Tsar Alexander III of Russia died of kidney failure, caused by injuries sustained by Nikolai Orelov in 1888. His son, Nicholas II, succeeded him.
- Spring: Samuel Liddell MacGregor Mathers assumed full leadership of the Hermetic Order of the Golden Dawn, after an argument between Mathers and William Wynn Westcott forced the latter to leave the Order.
- January 22: Queen Victoria of the United Kingdom passed away at the age of 81, marking the end of the Victorian era.
- December: Financier John Pierpont Morgan withdrew his funding of Nikola Tesla's experiments after Tesla intended to make electricity a free product, which stood in opposition of the Templars' plans.
- June 30: Nikola Tesla released a burst of electricity to a Templar research facility in Tunguska from his Wardenclyffe Tower during an Assassin raid on the facility, destroying the Staff of Eden and creating a large eruption known as the Tunguska explosion. Nikolai Orelov was the only survivor.
- November: Frank A. Vanderlip, Paul Warburg, Charles Norton, Benjamin Strong, Jr., Henry Pomeroy Davison and Nelson W. Aldrich, members of the Templar Order, met on Jekyll Island and designed the "Plan" to take control of the capitalist market.
- Autumn: Skulls of the Isu were found in the village of Boskop in South Africa in autumn.
- December 23: The Federal Reserve System was created as part of the "Plan" designed by the Templars, and as the first step to controlling the capitalist market.
- June 28: Archduke Franz Ferdinand of Austria was assassinated in Sarajevo by a member of the Black Hand, sparking World War I.
- June 29: Khioniya Guseva, disciple of Grigori Rasputin, attempted to kill her master in Pokrovskoye. Even though his intestines fell out, Rasputin managed to use the powers of the splinter of the Staff of Eden to survive and force Guseva to mutilate herself.
- December 24: On Christmas Eve, British and German soldiers called a truce amidst the fighting of World War I. During the truce, an Assassin operating as a medic for the British killed General Erich Albert, a Templar.
- Spring: The Assassin Lydia Frye took down a German Templar spy network in London with the aid of Winston Churchill, and assassinated the Master Spy, a Sage.
- December 29: The Templar agent Grigori Rasputin was assassinated by a group of conspirators led by Felix Yusupov, with influence of the Assassins.
- March 15: Tsar Nicholas II of Russia abdicated the Russian throne after the start of the Russian Revolution, under pressure of the Assassins.
- November 7: Nikolai Orelov infiltrated the Winter Palace in Petrograd, tasked by Vladimir Lenin to kill Tsarevich Nicholas II of Russia. After finding out that the Imperial Sceptre in the Palace was a mere replica of the Staff of Eden, Orelov decided to spare the Tsarevich's life.
- November 15: Nikolai Orelov infiltrated the asylum in Krasnoyarsk to meet Khioniya Guseva. After hearing her account of the splinter's power, he granted her wish to die by killing her with his Hidden Blade.
- November 22: Nikolai Orelov and two henchmen unearthed the corpse of Grigori Rasputin to recover the splinter of the Staff of Eden, based on information of Tsarevich Nicholas II.
- December: Several scientists and members of the Russian Assassin Brotherhood, including Sergei and his wife, left to form a community in an Assassin science city at a facility in Protvino, provided by the Russian Academy of Sciences.
- July 17:
- Tsarevich Nicholas II and his family were massacred in Yekaterinburg by Templars intent on retrieving their Precursor box, though Nikolai Orelov rescued the Tsarevich's daughter Anastasia Nikolaevna and secured the box.
- After the Precursor box and Nikolai's shard were activated in conjunction, the consciousness of Shao Jun was transferred from the box to Anastasia. Nikolai planned to bring Anastasia to the Assassins and the pair fled from Yekaterinburg to Kazan, fending off the Templars along the way.
- September: Nikolai Orelov was betrayed by his friend Leon Trotsky on behalf of the revolution and captured by the Templars. Using Shao Jun's skills, Anastasia saved Nikolai from capture and the two escaped from Kazan by boat.
- Anastasia was taken by Sergei to meet the Russian Mentor while Nikolai was forced to report to the local bureau. The Assassins intended to extract Shao Jun's memories from Anastasia, which caused Nikolai to betray his brothers and rescue Anastasia.
- Nikolai saved Anastasia from imprisonment in the Assassins' hideout next to Spasskaya Tower. After Nikolai successfully destroyed a pursuing tank, he met Anastasia in front of Bolshoi Theatre and gave her his wife's forged papers, which she used to flee to Germany under the name "Anna Anderson".
- Nikolai Orelov, his wife Anna and daughter Nadya, fled Russia using the splinter of the Staff of Eden and settled in the United States.
- November: Moina Mathers, formerly Mina Bergson, took leadership of the Hermetic Order of the Golden Dawn and abandoned the Assassin Order after the death of her husband Samuel Liddell MacGregor Mathers.
- January 21: The Irish War of Independence started between the Irish Republic and the United Kingdom. At least one Assassin participated in the conflict.
- November 7: In twelve cities in the United States, agents of the Bureau of Investigation launched the Palmer Raids, directed by Alexander Mitchell Palmer, to arrest and deport radical leftists, though many innocents including Anna and Nadya Orelov were also rounded up.
- March 12: Sun Yat-sen, founder of the Republic of China and Grand Master of the Chinese Templars, was assassinated by members of the Assassin Brotherhood in Beijing.
- January: Nikolai and Innokenti Orelov were attacked by the Assassin Sergei, who was tasked to bring Nikolai back to the Russian Assassins, at their cabin in the woods of Connecticut, though Sergei was killed in the process.
- October 31: The illusionist Harry Houdini was killed by the Templars to retrieve the Piece of Eden he possessed, which he used to obtain fame during his career.
- British Templar Grand Master Thaddeus Gift was killed by Albert Bolden, the Black Cross, in London, England for abandoning the Templars' principles and using the Order for personal gain.
- Darius Gift, son of Thaddeus Gift, was sent to Shanghai to deliver a box to Chiang Kai-shek, with the intention of drawing him into the Order's fold.
- The Black Cross Albert Bolden infiltrated the Templar-built train Great Wall, carrying White Russian soldiers led by the former Templar Yuri Dolinsky to the warlord Zhang Zongchang to fight Chiang Kai-shek's Nationalists, where Bolden killed Dolinsky for betraying the Order.
- Darius Gift was mistaken for the Black Cross by two Frenchmen in Shanghai, before being saved from his harassers by the Black Cross. However, Darius' box was stolen by the actress Ruan Lingyu, posing as a prostitute, while he was distracted.
- Grand Master Stirling Fessenden of the Shanghai Rite of Templars organized a meeting with the local Master Templars, informing them that they should offer their aid to the Black Cross in any capacity while he searched for a traitor in their ranks.
- The Black Cross infiltrated the Great World, headquarters of the Hop Wo Society, a front for the Green Gang, where he was ambushed. After allowing himself to be captured to meet gang leader Du Yuesheng, he escaped the building.
- Darius Gift infiltrated the Mingxing Motion Picture Company after discovering Ruan Lingyu's true identity, but was overpowered by her accomplice Zhang Damin when confronting her. Ruan decided to aid Darius, and after escaping from Zhang, she handed the box's contents to him.
- The Black Cross discovered the traitor within the Order was Soong Ching-ling, wife of the late Sun Yat-sen, who acted to keep the box out of the hands of Chiang Kai-shek, realizing the latter had no intention of joining the Order.
- Grand Master Stirling Fessenden was called to a meeting by Du Yuesheng, where Chiang Kai-shek revealed his disinterest in joining the Templar Order.
- April 12: The Black Cross killed Flowery Flag, an agent of Du Yuesheng who was sent to kill Darius Gift. Having learned that the Black Cross killed his father, Darius shot him in retaliation, causing the Black Cross to fall from a rooftop.
- Nikolai and Innokenti Orelov were tracked down by a team of Assassins employed by the Bureau of Investigation. They took down all Assassins except the team's leader, who managed to catch Nikolai. His son complied to Nikolai's request to shoot the man, killing both the team leader and Nikolai.
- March 12: Mahatma Gandhi started the Salt March in disobedience against the British's salt laws in India until April 5, and managed to gather a large following with aid from his Apple of Eden.
- Abstergo Industries was founded by the Templar Order as a public front, which would primarily be used as a shadow company to control the world's capitalist market.
- April 26: The town of Guernica was bombed on orders of Nationalist Spain under Francisco Franco by Nazi Germany and Fascist Italy, to route the Spanish republican rebels, as part of the Spanish Civil War. Several Spanish Assassin died during the bombing.
- The Templar Rufus Grosvenor, a former disciple of the Master Spy, convinced the Assassin Norbert Clarke, sent by the British Brotherhood to aid the Spanish Assassins, to take his own life.
- Grosvenor, posing as Norbert Clarke, joined Ignacio Cardona's Assassin cell in Barcelona, intending to have him unlock the powers of the Koh-i-Noor with the Precursor DNA in his genes.
- Fighting broke out in between the Nationalists and communists in Barcelona. With the Assassins undecided on what faction to join, Grosvenor persuaded Cardona to use the Koh-i-Noor to calm down then, nearly killing the Assassins.
- Albert Bolden, the former Black Cross, attacked Grosvenor to reacquire the Koh-i-Noor, but failed and escaped with an unconscious Cardona instead. Having escaped with the Assassin, Bolden convinced them to rally against Grosvenor.
- Bolden and Cardona confronted Grosvenor and the Assassins, rallied behind the Templar, in a church in the Spanish countryside. Bolden and Cardona were overpowered, and with another opportunity to use the Koh-i-Noor, Cardona destroyed the church and routed Grosvenor and Glaucia Acosta.
- Bolden and Cardona continued fighting in the Spanish Civil War, before Bolden would guard the ruins of the abandoned church, where the Koh-i-Noor remained buried.
- September 1: World War II started, orchestrated by the Templar Order, influencing leaders on either side of the conflict such as Adolf Hitler, Joseph Stalin, Winston Churchill and Franklin D. Roosevelt to bring chaos and turmoil to the world's population.
- Members of the Assassin Brotherhood started infiltrating the German nuclear war project headed by Templar Obbergruppenführer Gero Kramer, until Kramer discovered and removed the Assassins.
- September 7: The Nazi bombing of London, known as the Blitz, started, destroying large portions of the city and killing thousands of civilians.
- September: The Assassins Boris Pash and Julia Dusk successfully recruited Eddie Gorm to work as a double-agent in the German nuclear war project, after Gorm's family was killed in the Blitz.
- Eddie Gorm abducted Nazi physicist Werner Heisenberg at a Nazi meeting at the Wilhelm Institute in Berlin, discovering that the German nuclear war project was a front for Gero Kramer's Die Glocke project.
- Eddie Gorm and an injured Julia Dusk escaped from the Wilhelm Institute to an Assassin safehouse in Berlin, where Boris Pash revealed the existence of the Assassins and Templars to Gorm and recruited him into the Brotherhood.
- January 7: The Templars faked Nikola Tesla's death in a hotel room in New York City and pressured the FBI to order the Alien Property Custodian to seize Tesla's belongings.
- February 27:
- The Assassin Eddie Gorm infiltrated the Nazis' hydroelectic water plant in Vemork, where he confronted and was overpowered by the Templar Obbergruppenführer Gero Kramer.
- Gero Kramer placed Eddie Gorm in Die Glocke, a proto-Animus developed by Nikola Tesla using the Nazis' Apple of Eden, to use Gorm's genetic memory and locate Pieces of Eden in the past they could acquire through time travel.
- Allied forces besieged the Vemork facility, causing Gero Kramer and the Nazis to flee with their captive Nikola Tesla. Eddie Gorm was rescued by fellow Assassin Julia Dusk.
- July 15:
- Assassins Eddie Gorm and Julia Dusk besieged Książ Castle, where they killed Templar Obbergruppenfürher Gero Kramer during a party and retrieved his Apple of Eden.
- Nikola Tesla revealed Boris Pash's secret alliance with Templar scientist John von Neumann, causing Eddie Gorm and Julia Dusk to turn on Pash. Dusk blew herself up with a grenade in an attempt to destroy the Apple of Eden; Pash instead took the artifact and left Gorm for dead.
- October 28:
- Aboard the USS Eldridge, Assassin Boris Pash and Templar John von Neumann combined their efforts to use the Apple of Eden and Die Glocke to travel back in time and kill Adolf Hitler, who had fallen out of the Templars' control, a project that would come to be known as Project Rainbow.
- Assassin Eddie Gorm killed Nikola Tesla aboard the USS Eldridge to thwart Project Rainbow, before taking his own life in front of Boris Pash.
- The USS Elridge briefly manifested in a future state using the powers of the Apple of Eden, though the project was ultimately deemed a failure.
- July 1–22: The Bretton Woods conference was held by European powers – secretly economic agents of the Templars – to form the World Bank, as part of the "Plan".
- November 10: Barthel Schink, the leader of the anti-fascist group Edelweiss Pirates, was hanged by the Nazis. Before his hanging, he told Miriam Kurtz to retrieve a Piece of Eden from the Cologne Cathedral and bring it to the Assassins in Paris.
- December 25: Keith Scipione, an agent of Abstergo Industries, purchased the original Shroud of Eden from a member of the Baguttiani in Milan, Italy.
- April 30: Adolf Hitler was killed by an Assassin outside his Führerbunker, after having killed his body double inside the hideout. The Assassins also took possession of his Isu artifact.
- July 16: The Manhattan Project tested its first atomic bomb, designed by J. Robert Oppenheimer, at the Los Alamogordo air base in New Mexico. The tests were authorized by Abstergo Industries.
- August 6–9: The first atomic bomb was dropped on Hiroshima on August 6 by the United States, and a second hit the city of Nagasaki on August 9.
- August 12: Emperor Hirohito of Japan surrendered to the Allies, marking the end of World War II.
- January 30: Mahatma Gandhi was assassinated by the Templars to retrieve his Apple of Eden, after he had used it to lead a non-violent rebellion against British rule in India.
- August 16: British economist Harry Dexter White was killed by the Templars after betraying the Order by warning the Soviet Union of their capitalist plans.
- June 17: Rocket engineer Jack Parsons died due to injuries received in an explosion in his laboratory orchestrated by Abstergo Industries, after Parsons made plans to reveal the secrets behind Aleister Crowley's formula.
- March 5: Joseph Stalin, leader of the Soviet Union, was killed by the Assassins with the use of poison, making it look like he died of a stroke.
- Central Intelligence Agency (CIA) initiative Project BLUEBIRD, a mind control program spearheaded by Assassin Boris Pash, started after being sanctioned by the Mentor of the American Assassins, who hoped to gain an advantage over the Templars.
- August 19: Prime Minister Mohammad Mosaddegh of Iran was overthrown in a coup d'état orchestrated by Abstergo Industries to stop his plans to nationalize the Iranian oil industry.
- June 7: President Jacobo Árbenz of Guatemala was overthrown in a coup orchestrated by Abstergo Industries to protect their capitalist interest.
- February 8: While on his deathbed, Templar scientist John von Neumann was killed by his former ally, Assassin Boris Pash, accompanied by Alekseï Gavrani, so that Pash could obtain his Piece of Eden.
- July 29: The National Aeronautics and Space Administration (NASA), a government agency of the United States, was founded, with influence of Abstergo Industries.
- January 2:
- Members of the Assassin Boris Pash's Bloodstone Unit, including Alekseï Gavrani and Julia Gorm, interrogated Cooper, a Templar who had infiltrated the United States Army in Vietnam.
- Alekseï Gavrani expressed his grievances with the Bloodstone Unit's tactics and was sent home by Boris Pash in response.
- November 22:
- President John F. Kennedy of the United States was assassinated as part of a Templar conspiracy by members of the Bloodstone Unit, under direction of CIA director and Assassin William King Harvey, a secret Templar. Templar sleeper agent Lee Harvey Oswald also participated.
- Kennedy's driver, Assassin William Greer, took the President's Apple of Eden, while another Apple was used by the Templars to create confusion. Assassin Alekseï Gavrani took the Apple from Greer, believing Boris Pash to be a traitor.
- Alekseï Gavrani brought the artifact to William King Harvey instead and took up the mantle of CIA agent QJ/WIN again.
- Boris Pash and his Bloodstone Unit experimented on Julia Gorm using their Apple of Eden, which eventually successfully resulted in the conciousness of her father Eddie Gorm taking over her mind. Gorm then endeavoured to kill Pash like her father wanted to.
- July 30:
- Assassin Alekseï Gavrani, aboard an American ship disguised as a Vietnamese vessel in the Gulf of Tonkin, tracked Boris Pash to the island of Hòn Mê.
- Alekseï Gavrani promised to protect Boris Pash and Zenia, pregnant with Pash's child, from Julia Gorm in exchange for the Apple of Eden. Gavrani confronted Gorm, but the encounter left them both mortally wounded.
- Boris Pash used Gavrani's radio to contact the USS Maddox. He was met by William King Harvey, who took the Apple of Eden upon revealing his Templar affiliations. Templar scientist Warren Vidic helped in Zenia's labour, and the child – later known as Nathalie Chapman – became a prisoner of the Templars.
- July 21: NASA's Apollo 11 spaceflight to the Moon, funded by Abstergo Industries, resulted in the recovery of an Apple of Eden from the Moon's surface.
- Abstergo Industries' first Precursor Habitation Expedition took place as the second phase of what later became the Phoenix Project. By the end of the decade, the expeditions uncovered seven large Denisovan sites across the globe.
- April 21: François Duvalier, the fortieth President of Haiti, was killed by the Assassins, for his oppression over the Haitian people.
- September 11: President Salvador Allende of Chile was overthrown and killed in a military coup orchestrated by Abstergo Industries and engineered by Henry Kissinger to stop the nationalization of industries in Chile.
- Nathalie Chapman escaped Warren Vidic's laboratory, taking her father's Apple of Eden and the blueprints for the Animus, giving the latter to Assassin William Miles. Miles gave them to Russian Assassin Medeya Voronina in Moscow, after she rescued him from Templar agents, and told her to build the machine.
- Abstergo Industries started the Animus Project, directed by Dr. Warren Vidic, with the intention of exploring the genetic memories of subjects to discover the secrets of the Assassins and the Pieces of Eden.
- July 29: Abstergo Industries' Surrogate Initiative passed its twenty-third test session to relive the genetic memory of another individual, when its director Aileen Bock relived the memories of Miriam Kurtz through her son Seamus' DNA.
- August 9: Aileen Bock was severely injured in an accident involving the Animus during the thirty-seventh test session of the Surrogate Initiative, after which the project was put on halt.
- February 9: A 10-year old boy, later named Daniel Cross, was kidnapped by Abstergo Industries and used as Subject 4 of the Animus Project. His memories were implanted with a hidden impulse to kill the Mentor of the Assassin Brotherhood before being released from captivity.
- September: Warren Vidic experimented on Daniel Cross with a device capable of mimicking Piece of Eden capabilities across a network, between Subject 4's Animus sessions.
- An Abstergo team led by Dr. Alan Rikkin located the hideout of Joseph and Mary Lynch, seeking the latter to use her genetic memories to locate Aguilar de Nerha's Apple of Eden. Mary committed suicide with the help of her husband, who told their son Callum to flee.
- August 19–21: President Boris Yeltsin of Russia took political power from President Mikhail Gorbachev in a staged coup d'état by standing up to communism, with aid from Abstergo Industries.
- December 8: The Belavezhskaya Accords were signed in the Belavezhskaya Forest by the Presidents of Russia, Ukraine and Belarus, declaring the dissolution of the Soviet Union.
- December 25: Mikhail Gorbachev announced his resignation as President of the Soviet Union, making Boris Yeltsin the leader of Russia.
- January: Abstergo agents buried several constructed skeletons near the site of Tim D. White's expedition in Ethiopia, to prevent knowledge of the Isu creating the human race becoming public.
- April 23: Daniel Cross was brought to an Assassin compound outside Philadelphia by the Assassin Hannah Mueller to meet Paul Bellamy, after noticing Daniel's Assassin tattoo and witnessing him attack a man he called a Templar as a result of the Animus' Bleeding Effect.
- April 24: Daniel Cross had a vision and discovered his purpose to find the Mentor, while reliving his ancestor Nikolai Orelov's memories of the Tunguska explosion. Daniel and Hannah visited Assassin hideouts around the globe for two years to find the Mentor.
- September 4–16: Apartment buildings in the cities Buynaksk, Moscow and Volgodonsk in Russia were bombed by Chechen terrorists, orchestrated by Abstergo Industries to boost the popularity of presidential candidate Vladimir Putin.
- May 7: Vladimir Putin became the second President of Russia, after winning the 2000 presidential election rigged by Abstergo Industries.
- November 6: The Mentor was killed by the unwitting Templar sleeper agent Daniel Cross, sending the Assassin Order into chaos and removing their influence over the 2000 American presidential election.
- November 21: Daniel Cross returned to the Abstergo Industries facility in Philadelphia. After entering the Animus, Daniel revealed the location of Assassin compounds and Abstergo initiated the Great Purge: a worldwide operation in which Abstergo strike teams attacked Assassin hideouts.
- The Animus Project started using Assassins captured during the Great Purge as subjects to explore their genetic memories, including Paul Bellamy.
- January 20: George W. Bush became the forty-third President of the United States, after winning the 2000 presidential election rigged by Abstergo Industries.
- October 7: The War on Terror started. At some point, William Miles tasked Emmanuel Barraza with finding a Templar presence in the war, but ended up killing innocent children armed with bombs on a bus aimed for peace talks. Emmanuel vowed to never take a life again.
- October 19: Daniel Cross infiltrated the Assassins' hidden Library of Ivan the Terrible beneath the Bolshoi Theatre in Moscow, where he killed the Assassin sentry and acquired the Prophet's Codex, written by Ezio Auditore da Firenze.
- March 13: Desmond Miles ran away from "the Farm", the Assassin community in the Black Hills in South Dakota he grew up in, on his sixteenth birthday, to escape the life his parents had chosen for him.
- March 20: The Iraq War started under influence of George W. Bush as part of the War on Terror, planned by Abstergo Industries to privatize the oil market in Iraq.
- December 25: Vanessa, a scientist working at the National Space Center's Landing Operations Control Center, sold the control codes of the Beagle 2 to Robert Getas, an employee of Abstergo Industries.
- The Assassin Lucy Stillman infiltrated Abstergo Industries after being contacted by Dr. Warren Vidic, who took an interest in her study of cognitive neuroscience. Over time, she grew to resent her old mentor William Miles, believing the tasks for the Assassins to be inhumane, and joined the Templar Order.
- Layla Hassan, a college dropout from UC Berkeley, was discovered and hired by Sofia Rikkin of Abstergo Industries through the company's Young Innovators program.
- Leila Marino, an employee of Abstergo Industries, allegedly committed suicide. An individual named Neumann was involved in her death, and Marino's file became classified.
- August: Clay Kaczmarek started his training to become an Assassin under William Miles.
- January: Clay Kaczmarek infiltrated the Abstergo Campus on orders of William Miles, and retrieved data related to the Animus Project.
- April 20: A large amount of oil was spilled into the Gulf of Mexico until 15 July, under contract of Abstergo-controlled British Petroleum. BP cleaned up the oil, which was worth billions of dollars.
- December 10: Shaun Hastings was saved from Abstergo agents by Rebecca Crane, after Hastings leaked classified Abstergo Industries documents to Wikileaks. She managed to hack the computer system of the van she was held in, and saved Hastings during a gas stop.
- December 14: Subject 15 of the Animus Project, a pregnant woman, was eliminated after Lucy Stillman discovered there were dangerous complications due to the genetic memories of Subject 15's child overlapping with her own.
- February 1: Clay Kaczmarek was captured by the Lineage Discovery and Acquisition department of Abstergo Industries and became Subject 16 of the Animus Project, as planned by William Miles.
- Abstergo Industries' synthetic drug New Fluoride was introduced to the water supplies of various settlements in China and the small United States town of Prince George. Despite Susan Drayton's failed attempt at leaking a sample of the drugs, news of the operation still reached the press.
- August 8: Clay Kaczmarek committed suicide in the Animus laboratory in the Abstergo Campus. Using his blood, he painted several cryptic messages in the laboratory, and preserved his consciousness in an artificial intelligence inside the Animus.
- September 1: Desmond Miles was kidnapped near Washington Square Park in New York City by agents of Abstergo Industries, and was brought to the Abstergo Campus in Rome, Italy.
- September 2: Desmond Miles was placed inside the Animus by Warren Vidic and Lucy Stillman in the laboratory of the Abstergo Campus and became Subject 17 of the Animus Project, to relive the memories of Altaïr Ibn-La'Ahad.
- September 7: A team of Assassins attempted to rescue Desmond Miles from Abstergo's Rome facility on Lucy Stillman's request, but ended up being exterminated.
- September 8: Desmond Miles and Lucy Stillman escaped the Abstergo Campus in Rome, which was staged by Warren Vidic, after Desmond was done reliving Altaïr Ibn-La'Ahad's memories.
- September 9: Lucy Stillman and Desmond Miles arrived at an Assassin hideout in Rome, where they met with Shaun Hastings and Rebecca Crane; Desmond started reliving the memories of Ezio Auditore da Firenze in the Animus 2.0.
- September 12: A team of Assassins in Whistler, Canada was exterminated by Abstergo agents led by Daniel Cross.
- September 15: Warren Vidic led an Abstergo attack on the Assassin hideout in Rome. The Assassins managed to escape, but Abstergo retrieved the Animus recordings left behind by Lucy Stillman.
- September 16: Lucy Stillman's Assassin team arrived at Monteriggioni and set up a headquarters in the Sanctuary beneath the Villa Auditore, after a roadblack in Grosseto prevented them from reaching the Assassin cabin in the Swiss Alps.
- October 10: Desmond Miles recovered Ezio Auditore da Firenze's Apple of Eden from the Colosseum Vault, where Juno forced him to kill Lucy Stillman, realizing that she would bring the artifact back to the Templars; Desmond entered a coma from shock, and was placed in the Animus after his father William Miles recovered him.
- October 30: Desmond Miles awoke from his coma, with aid from an AI construct of Clay Kaczmarek inside the Animus, and used the Apple of Eden to enter the Grand Temple with William Miles, Shaun Hastings and Rebecca Crane an hour later; there, Juno forced him to relive the memories of Haytham Kenway and Ratonhnhaké:ton.
- November 16: Desmond Miles retrieved a power source for the Grand Temple from an office building in Manhattan, where he met and knocked out Daniel Cross.
- November 28: An Assassin team led by Harlan Cunningham infiltrated the Abstergo Campus in Rome, killing four hackers trying to track down William Miles' team, and destroyed the facility's servers.
- November 30: Abstergo's Sigma team, led by Juhani Otso Berg, attacked the Assassin hideout in Florence, which was blown up by the Assassin cell's leader Adriano Maestranzi. Berg and Harlan Cunningham were the only survivors.
- December 2: Desmond Miles retrieved the second power source for the Grand Temple at a mixed martial arts event in São Paulo, Brazil, where he took it from Daniel Cross.
- December 12: William Miles was captured by Abstergo's Sigma team led by Juhani Otso Berg in Cairo, Egypt while recovering the third power source for the Grand Temple from the Egyptian Museum.
- December 14: Desmond Miles killed Warren Vidic and Daniel Cross at the Abstergo Campus in Rome while rescuing William Miles. Vidic's death forced the launch of Eye-Abstergo to be put on hold.
- December 20: Desmond Miles, William Miles, Shaun Hastings and Rebecca Crane retrieved the Grand Temple's key from the grave of Connor Davenport in the Davenport Homestead.
- December 21: Desmond Miles sacrificed himself by touching the Eye, against the wishes of Minerva, saving the world from destruction by the incoming solar flare, though also releasing Juno from imprisonment in the Grand Temple; fifteen hours later, his body was recovered by Abstergo agents.
- May 21: Gavin Banks of the ship Altair II received William Miles' codex, wherein William had written all his knowledge and named Gavin the new leader of the Assassin Brotherhood.
- October: MysoreTech employee Jot Soora was assigned to test the Brahman V.R., an adaption of the Animus glass developed by Abstergo Industries for release on the Indian market by MysoreTech; secretly, it extracted the genetic memories of its users.
- October 29: An unidentified research analyst was assigned by Abstergo Entertainment to explore the memories of Edward Kenway as part of the Sample 17 Project in their Montreal facility.
- November 3: Jot Soora was abducted by the Assassins Siobhan and Jasdip Dhami in Mumbai, after lying to Siobhan that he was the descendant of Arbaaz Mir; Abstergo raided the compound they were hiding in, resulting in Siobhan's death.
- November 4:
- Monima Das, descendant of Arbaaz Mir and Pyara Kaur and fiancée of Jot Soora, and two Assassins drowned in the river after crashing from the Mumbai Pune Expressway amidst an Abstergo attack.
- Abstergo agents led by Juhani Otso Berg raided the Assassin hideout in the Chor Bazaar in Mumbai, resulting in the death of Dinesh and several Abstergo agents; their captive Jot Soora managed to escape.
- November 5: The Abstergo Entertainment research analyst hacked the computer of Olivier Garneau, CCO of Abstergo Entertainment, at the request of John Standish and delivered an email conversation about a shareholders meeting in Chicago to Shaun Hastings and Rebecca Crane.
- November 18: Abstergo Entertainment detained three employees in the Bunker on suspicions of hacking into company computers. With aid from John, the unidentified research analyst hacked into the facility's server; there, they met Juno, who intended to occupy the analyst's body but explained it was too early.
- November 26: John Standish, secretly a Sage, was killed by Abstergo Entertainment guards inside the Bunker of their Montreal facility, after having poisoned the unidentified research analyst.
- November: Juhani Otso Berg explored the memories of Darius Gift and the Black Cross Albert Bolden in hopes of finding the Koh-i-Noor, but was unable to find any trail leading to its location.
- December 17: The Assassin crew of the Altair II joined up with the Assassin cell in Osaka, who had taken up the guise of the Yakuza gang Onmoraki-Gumi, under the new leadership of Saeko Mochizuki, following the death of her husband Kenichi Mochizuki after an Abstergo attack.
- December 25: The body of John Standish was brought to Álvaro Gramática at Abstergo's laboratory in Paris to conduct research for the Phoenix Project.
- January 21: Melanie Lemay was promoted to the new Chief Creative Officer of Abstergo Entertainment, starting in March, following Olivier Garneau's disappearance.
- January 24: Melanie Lemay, still in shock due to her recent acknowledgement about the existence of a precursor race and just settled in her new office, received a phone call from Álvaro Gramática asking her to write a memoir of her time working with the Sage John Standish detailing his personal life for his research in the Phoenix Project.
- February 10: Layla Hassan, an employee of Abstergo Industries, proposed the idea of a robotic Animus arm to the new Animus Project lead Sofia Rikkin.
- February: The Assassins Harlan Cunningham and Arend Schut stole a Precursor box from an Abstergo Industries facility in Rotterdam. Abstergo's Sigma Team managed to recover the artifact, but the Assassins managed to escape.
- March 16: The Assassin crew of the Altair II met with Galina Voronina, a member of the Assassin cell in the science city of Protvino, south of Moscow, who revealed that her cell had gone crazy from the Bleeding Effect in the Animus.
- March 20: Galina Voronina, supported by the crew of the Altair II, exterminated the last members of her cell, including her own sister and mother, who was hooked up to the Animus and connected to Juno.
- May 7–13: Crewmembers of the Altair II were interrogated in William Miles' bunker in Tromsø, Norway to flush out a spy who had been sending coded messages to the Initiates, a hacker group.
- May: Juhani Otso Berg travelled to Essen, Germany to find the Ankh of Isis. Believing the lead to be a dead end, Berg abandoned the search and left for Cuba.
- May 23: Eric Cooper and Stephanie Chiu were discovered to be Initiate spies by the Assassins, and the Assassins tried to form an alliance with the Initiates.
- May 25–30: Juhani Otso Berg led a Templar expedition in Jamaica to find the Observatory. After several days of digging, Berg concluded that the temple suffered a catastrophic collapse in the 18th century and was deliberately buried by the Assassins.
- June 16: Shaun Hastings sent a message to members of the Initiates, imploring them to work with the Assassins.
- October 13: A team of Assassins led by Gavin Banks destroyed the Abstergo Industries laboratory in Paris, destroying both John Standish' body and the original Shroud of Eden. Sigma Team followed the Assassins to La Rochelle, where the Assassins escaped on the Altair II.
- The Assassins Bishop and Shaun Hastings employed the aid of a new Helix initiate to find the remains of the Sage François-Thomas Germain ahead of Abstergo, by having him explore the memories of Arno Dorian.
- Abstergo Entertainment's Helix servers were struck by a virus. Violet da Costa was assigned to help cleanse the company's systems. She was later joined by her supervisor, Juhani Otso Berg, who tasked a research analyst with reliving the memories of Shay Cormac.
- The research analyst broadcast a video of Shay Cormac killing Assassins to the Brotherhood's network on Berg's orders, and was offered the choice to join the Templar Order or be killed by Melanie Lemay, Violet da Costa and Berg.
- Juhani Otso Berg was ordered to bring the Templars' Precursor box to Dr. Álvaro Gramática's secret laboratory by Laetitia England for experimentation in the Phoenix Project.
- October 4: The son of Desmond Miles, a Sage, was brought to an Abstergo clinic in New York by his mother, leading to Abstergo discovering his lineage.
- October 24: Shaun Hastings and Rebecca Crane ambushed Isabelle Ardant in her London office, but were forced to flee due to the intervention of Juhani Otso Berg and Violet da Costa.
- Bishop tasked an Initiate with exploring the memories of Jacob and Evie Frye to discover the location of a Shroud of Eden to secure it before the Templars did. Through the exploration of their memories, the Assassins discovered its location in the Buckingham Palace vault.
- The Templars Isabelle Ardant, Otso Berg and Violet da Costa and Assassins Shaun Hastings, Rebecca Crane and Galina Voronina engaged in a fight in the Buckingham Palace vault. Ardant was killed by Shaun, and Rebecca was shot by Violet, forcing the Assassins to flee.
- Violet da Costa delivered the Shroud of Eden to Álvaro Gramática to aid him in the Phoenix Project, as part of a secret plot orchestrated by Juno.
- William Miles enacted the Rooftop Garden Protocol, shutting down all communications on the Assassins' network and with the Initiates.
- Charlotte de la Cruz was saved by the Assassins Xavier Chen and Galina Voronina from an attack by Templar agents, and brought to their hideout in the Salton Sea.
- Based on intelligence delivered by Joseph, an Assassin suspected of being a traitor, Xavier Chen convinced Charlotte de la Cruz to relive the memories of her ancestor Tom Stoddard through an Animus to acquire information on a Piece of Eden.
- Xavier Chen's team arrived at the Treo Tea head office, a front of Abstergo, to save Joseph, trusting his continued allegiance based on Stoddard's memoriesk. As Xavier and Galina Vornina entered the office, Charlotte de la Cruz discovered Joseph's treachery upon further exploration in the Animus.
- Xavier Chen was killed by Joseph for causing the death of his lover Christian, and Galina Voronina was injured. Joseph killed several Templars including Didier Hawking in an explosion out of duty. Charlotte rescued Galina from attacking Templar guards, and all Assassins managed to escape.
- The Assassins Charlotte da la Cruz, Kody Adams and Galina Voronina escaped to Mexico City. While Galina was being checked on by an illegal doctor, Galina killed the doctor's accomplice, a secret Templar agent, and knocked the doctor out.
- Determined to find the hacker group Erudito, Charlotte de la Cruz started exploring the memories of her ancestor Quila, based on clues left behind by Consus.
- Galina Voronina, Charlotte de la Cruz and Kody Adams unsuccessfully attempted to kidnap Garcia-Lopez, a Templar with a key role in the Order's propaganda division, in order to locate Joseph Laurier.
- Kody Adams was abducted by a Mexican cartel led by Arturo Viera, boyfriend of the doctor the Assassins hired, after Galina Voronina left him to search for Charlotte de la Cruz, who had left out of frustration.
- Charlotte de la Cruz and Galina Voronina met Arturo Viera's cartel at a stadium in Mexico City to exchange themselves for Kody, though the cartel was wiped out by the Templars in retaliation for disobeying their orders not to engage the Assassins.
- While Charlotte de la Cruz attempted to surrender to the Templars in exchange for sparing Galina Voronina's and Kody Adams' lives, the members of Arturo Viera's cartel routed Ortega Sanchez's entourage with the help of Voronina and Adams.
- Charlotte de la Cruz discovered the password to Erudito's network through the memories of her ancestor Quila, and discovered GPS coordinates leading to Argentina. There, they were met by Erudito members, under the leadership of Charlotte's grandmother Florencia.
- Galina Voronina's Assassin cell and the members of Erudito reluctantly agreed to join forces to stop the resurrection of Juno through the Phoenix Project.
- Charlotte de la Cruz entered the Animus to relive the memories of her ancestor Hiram Stoddard, who came into contact with the Isu Consus, while members of Erudito received Assassin training from Galina Voronina.
- While reliving the memories of Hiram Stoddard, Charlotte de la Cruz received a cryptic warning from the Isu Consus that she needed to find the Koh-i-Noor to stop the return of Juno.
- Templars led by Ortega Sanchez raided Erudito's base, killing numerous people including Kody Adams. Charlotte de la Cruz, Galina Voronina, Florencia and Guernica Moneo managed to escape with the help of their allies, which resulted in the death of Sanchez.
- June 26: The United Kingdom held a referendum over its membership of the European Union, commonly known as Brexit, in which the majority voted to leave. Data mining company Newton Analytica, on the payroll of Abstergo Financial CEO Agneta Reider, swayed the vote in favour of leaving.
- André Bolden, a descendant of the Black Cross Albert Bolden, was lured to Abstergo Industries under the false pretense of getting his PTSD cured. In reality, Abstergo placed him in the Animus to explore the memories of his ancestor Jan van der Graff.
- Juhani Otso Berg gained André Bolden as an ally, despite the latter's opposition towards Abstergo, to root out the Instruments of the First Will in the Templar organisation, who had mysteriously killed Caitlin Gift.
- October 21: The Abstergo Foundation staged the public execution of Callum Lynch for the murder of a pimp, and secretly transferred him to their facility in Madrid to use his genetic memories to locate an Apple of Eden.
- October: Despite his initial reluctance, Callum Lynch entered the Animus on orders of Animus Project lead Sofia Rikkin to explore the life of his ancestor Aguilar de Nerha, an Assassin active during the Spanish Inquisition who held an Apple of Eden.
- After Callum Lynch discovered what happened to his ancestor's Apple of Eden, Callum Lynch saw ghastly visions of his Assassin ancestors and his mother, which convinced him to embrace his Assassin heritage.
- A group of detained Assassins at Abstergo's Madrid facility, including Moussa, Lin, Nathan, Emir and Callum Lynch, staged a breakout. Only Moussa, Lin and Lynch successfully survived and escaped Madrid.
- Alan Rikkin and his daughter Sofia recovered an Apple of Eden from the grave of Christopher Columbus.
- December 14:
- Alan Rikkin organized a meeting at Grand Templar Hall to celebrate their acquisition of an Apple of Eden with other members of the Templar Order, including his daughter Sofia and the Council of Elders.
- Callum Lynch, with aid from the other Assassins, infiltrated the meeting at Grand Templar Hall and killed Alan Rikkin, before retrieving the Apple of Eden and escaping.
- Abstergo Industries employees Layla Hassan and Deanna Geary were assigned to recover the sarcophagus of Bayek of Siwa from the Qattara Depression in Egypt, on Simon Hathaway's orders.
- Layla Hassan disobeyed direct orders to directly return Bayek's sarcophagus to Abstergo and instead used her own portable version of the Animus to relieve Bayek's memories using her DNA, in an attempt to prove her worth to the Animus Project.
- Layla Hassan and Deanna Geary were attacked by Abstergo's Sigma Team for insubordination. While Geary was seamingly killed, Hassan used the abilities she learned from reliving Bayek's memories to take down her assailants.
- William Miles, Mentor of the Assassin Brotherhood, met with Layla Hassan in the Qattara Depression to offer her a change to escape from Abstergo by joining up with the Assassins, which she reluctantly accepted.
- Layla Hassan discovered the broken Spear of Eden previously held by the Greek mercenary Kassandra, based on information from the book Lost Histories by Herodotos.
- Layla Hassan led a team of Assassins consisting of Dr. Victoria Bibeau, Kiyoshi Takakura and Alannah Ryan on a mission to find the Staff of Hermes Trismegistus through the exploration of Kassandra's genetic memories in a hideout in London.
- Through Kassandra's memories, Layla Hassan discovered the existence of Atlantis on the Greek island of Thera and accessed the Gateway to the Lost City.
- After activating Atlantis' mechanisms, Kassandra greeted Layla Hassan in the Gateway to the Lost City and granted her the Staff of Hermes Trismegistus, before imploring her to fix the rift in time and destroy all the Pieces of Eden.
- Through Kassandra's memories, Layla Hassan discovered the symbols required to open the doorway leading further into Atlantis, where she was contacted by the Isu Aletheia. With her help, Layla started training to use the Staff of Hermes Trismegistus and learning to fight its corruption.
- After witnessing simulations of the Isu Era through Kassandra's memories as part of her training, Layla Hassan was pulled out of the Animus by Victoria Bibeau to stop the Bleeding Effect. Corrupted by the Staff's power, Layla accidentally killed her friend in a fit of rage.
- Layla Hassan was confronted by Juhani Otso Berg in Atlantis. Refusing to give up the Staff, Layla fought Berg and bested him. She eventually decided to leave him crippled before signaling the Altaïr II to retrieve her.
- Assassin's Creed: Syndicate
- Assassin's Creed: Valhalla
- Assassin's Creed: Odyssey – The Fate of Atlantis
- Assassin's Creed II
- Assassin's Creed 3: Accipiter
- Assassin's Creed: Uprising – Volume 3: Finale
- Assassin's Creed III
- Assassin's Creed IV: Black Flag
- Assassin's Creed: Revelations
- Assassin's Creed Encyclopedia
- Assassin's Creed: Odyssey
- Assassin's Creed: Origins – The Curse of the Pharaohs
- Assassin's Creed: Origins
- Assassin's Creed: The Essential Guide (2018 edition)
- Assassin's Creed
- Assassin's Creed: Dynasty
- Assassin's Creed: Initiates
- Assassin's Creed: Odyssey novel
- Assassin's Creed: Project Legacy
- Assassin's Creed: Odyssey – Legacy of the First Blade
- Assassin's Creed Chronicles: India
- Assassin's Creed: Last Descendants
- Assassin's Creed: Unity
- Assassin's Creed: Origins – The Hidden Ones
- Assassin's Creed: Origins comic
- Assassin's Creed: Rebellion
- Assassin's Creed: Brotherhood
- Assassin's Creed 1: Desmond
- Assassin's Creed 2: Aquilus
- Assassin's Creed: Heresy
- Assassin's Creed Valhalla: Song of Glory
- Assassin's Creed: Valhalla – The Seas of Fate
- Assassin's Creed: Valhalla – The Swan-Road Home
- Assassin's Creed: Valhalla – Hunter of Beasts
- Assassin's Creed: Valhalla – Hunter's Repast
- Assassin's Creed: Valhalla – Honor's Hubris
- Assassin's Creed: Valhalla – A Brother's Keeper
- Assassin's Creed: Valhalla – Kingdom's End
- Assassin's Creed: Valhalla – Holy Day
- Assassin's Creed: Valhalla – Breaking the Order
- Assassin's Creed: Revelations novel
- Assassin's Creed: Last Descendants – Fate of the Gods
- Assassin's Creed: Official Game Guide
- Assassin's Creed: The Secret Crusade
- Assassin's Creed: Altaïr's Chronicles
- Assassin's Creed: Bloodlines
- Assassin's Creed: Memories
- Assassin's Creed: Last Descendants – Tomb of the Khan
- Assassin's Creed 4: Hawk
- Assassin's Creed: Revelations – Discover Your Legacy
- Assassin's Creed 5: El Cakr
- Assassin's Creed: Rogue
- Assassin's Creed: Recollection
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- Assassin's Creed II: Discovery
- Assassin's Creed: The Movie
- Assassin's Creed: Renaissance
- Assassin's Creed: Ascendance
- Assassin's Creed: Identity
- Assassin's Creed: Brotherhood – Copernicus Conspiracy
- Assassin's Creed: Brotherhood novel
- Assassin's Creed Chronicles: China
- Assassin's Creed – Volume 3: Homecoming
- Assassin's Creed: Embers
- Assassin's Creed – Volume 2: Setting Sun
- Assassin's Creed – Volume 1: Trial by Fire
- Assassin's Creed: Gold
- Assassin's Creed: Pirates
- Assassin's Creed: Black Flag
- Assassin's Creed IV: Black Flag – Freedom Cry
- Assassin's Creed: Forsaken
- Assassin's Creed III: Liberation
- Assassin's Creed: The Movie – Who's In Your Blood?
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- Assassin's Creed III – The Tyranny of King Washington
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- Icarus affair on Wikipedia
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- Assassin's Creed: Templars – Volume 1: Black Cross
- Assassin's Creed: Great Wall
- Assassin's Creed: Uprising – Volume 2: Inflection Point
- Assassin's Creed: Conspiracies
- Assassin's Creed: Bloodstone
- Assassin's Creed: Revelations – AbstergoIndustries.com
- Assassin's Creed: Templars – Volume 2: Cross of War
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