Napoleon's return to France in early 1815 caused yet another conflict, though Murat failed to come to the assistance of his old leader. However, at the beginning of June 1815, just as Napoleon was about to start his 1815 campaign in Belgium, Murat launched his invasion into Northern Italy. After Initial successes, Murat's field army was defeated at the Battle of Tolentino, and the remainder of troops deserted "en masse". Shortly after, the Austria Army of Naples under General Frederick Bianchi, Duke of Casalanza defeated the Field Army of the Kingdom of Naples at the Battle of Tolentino, sealing the fate of the junior King and his Kingdom, with the unit quickly following suite.