Federico da Montefeltro
Malatesta's image was publicly burnt in Rome, and a "de facto" crusade was then launched against him, in a league including the pope, the king of Naples, the Duke of Milan and Federico da Montefeltro. He defeated the first contingent of Papal troops, led by Napoleone Orsini, on 2 July 1461 at Castelleone di Suasa. In 1462 he was able to take Senigallia, but was forced to flee to Fano after the arrival of Federico da Montefeltro. The latter followed and severely crushed him on 12 August 1462 near Senigallia at the mouth of the Cesano. The war ended in 1463, due to the intervention of Venice, with the loss of all Sigismondo's territories apart from Rimini and a territory of some 8 kilometers around it: both, however, were assigned to return to the Papal States after his death. He then sought greater fortune as a general for Venice in its war against the Ottomans, as a field commander in the Peloponnesus (1464–1466). The Venetians granted him a contingent of 150 men to defend Rimini and his other lands during his absence.