Assassin's Creed II: Battle of Forlì

The Battle of Forlì was one of two downloadable content packs available for Assassin's Creed II. It comprised the first of the two "corrupted memory sequences" of the Animus.
The DLC also contained six memories, and a "special memory" that allowed the use of Leonardo da Vinci's Flying Machine over the city of Forlì.