 In 1480, an Ottoman Turkish fleet invaded Otranto, landing nearby the city and capturing it along with its fort.Pope Sixtus IV called for a crusade, and a massive force was built up by Ferdinand I of Naples, among them notably troops of Hungarian king Matthias Corvinus, despite frequent Italian quarreling at the time.The Neapolitan force met with the Turks in 1481, thoroughly annihilating them and recapturing Otranto.