Siege of Monteriggioni

The Siege of Monteriggioni was an engagement between the Borgia, under the command of Cesare Borgia, and the Auditore which took place in 1499. Determined to rid themselves of Ezio Auditore da Firenze, the Templars attacked the city of Monteriggioni with an overwhelming force, whilst the city's defenders, led by both Ezio and his uncle – Mario Auditore – held them off.

The Auditore were caught by surprise. Ezio himself was unaware of what was happening, sleeping together with Caterina Sforza. Though when a cannonball hit the room, shattering the wall and central pillar, Ezio jumped out of bed, dressed and armed himself with one Hidden Blade, however his armor was scattered by the attack. He climbed out the window onto the rooftop to observe exactly what was happening. It was then that Ezio realized that Monteriggioni was under attack. Another bomb struck the villa roof and Ezio fell down to the ground. There, his uncle Mario helped him up and told him the attack was led by the Borgia. Mario instructed his nephew to hold off the army until the townspeople could flee. Ezio jumped on a horse to get as fast as possible to the walls of defense. Upon the fortress walls, he used the cannons to destroy as many siege towers as he could.

Despite the destruction of many of the Templars' siege machines, the Templars managed to overwhelm the city's defenders and breach the main gates. A mortally wounded Mario Auditore was forced inside the city by Cesare Borgia who, revealing the Apple to be in his possession, proceeded to "invite" Ezio to come to Rome with a shot of his firearm; the shot killed Mario Auditore, whilst Ezio was also shot by a detachment of Templar arquebusiers upon the city walls. When Ezio eventually regained consciousness, he made his way to Rome, in pursuit of Cesare Borgia.

It would be another four years before he could finally confront Cesare and Rodrigo Borgia in Rome itself.

Trivia

 * Altaïr's armor was seen damaged at the siege of Monteriggioni. However, Ezio later retrieved the armor from the rubble.
 * After fleeing their compromised hideout the Gang's new hideot is in the the ruined Auditore villa,a hundred years after the siege on Monteriggioini.Desmond is taske with breaching the villa's interior from underground and enter the long disused sanctuary for honoring the assassin's who protected the world when most threatened.After Lucy Stillman,Shaun Hastings,And Rebecca Crane start setting up the Animus 2.0 in the ancient room,Desmond must restore the power,then reroutes primarily for the animus 2.0.

Source is Gaeminformer Magzine November edition pages 62-67
 * An ancient relic is found-Ezio's sister Claudia hidden journal.