Siege of Ancona was a battle in the Neapolitan War.It took place beginning on May 5, 1815 and persisted until May 30, 1815. The battle took place mere days after the Battle of Tolentino on May 3, 1815. The siege of Ancona was one of the last battles in Italy during the Neapolitan War. The city of Ancona was the last major Italian city to surrender. It was fought between Napoleon’s forces in Ancona, Italy and the Anglo-Austrian alliance during the One Hundred Days’ campaign.