When Mohammed II. issued forth with a fleet of one hundred galleys and two hundred transports, carrying seventy thousand troops, and ravished the Negropont away from Venice in 1470, he had only to repass the Hellespont to be absolutely safe. All that the Venetian admirals, the famous Loredani, could do was to retaliate upon such islands of the Archipelago as were under Turkish sway and ravage the coasts of Asia Minor. Superior as they were to the Turks in the building and management of galleys, they had not the military resources of their foe. Their troops were mercenaries, not to be compared with the Janissaries and Sipāhis, though the hardy Stradiotes from Epirus, dressed like Turks, but without the turban, of whom Othello is a familiar specimen, came near to rivalling them. On land, the Republic could not meet the troops of the Grand Signior, and after her very existence had been menaced by the near approach of a Turkish army on the banks of the Piave[13] (1477), Venice made peace, and even, it is said, incited the Turks to the capture of Otranto. The Ottoman galleys were now free of the Adriatic, and carried fire and sword along the Italian coast, insomuch that whenever the crescent was seen at a vessel's peak the terrified villagers fled inland, and left their homes at the mercy of the pirates. The period of the Turkish Corsairs had already begun. There was another naval power to be reckoned with besides discredited Genoa and tributary Venice. The Knights Hospitallers of Jerusalem, driven from Smyrna (in 1403) by Timur, had settled at Rhodes, which they hastened to render impregnable. Apparently they succeeded, for attack after attack from the Mamlūk Sultans of Egypt failed to shake them from their stronghold, whence they commanded the line of commerce between Alexandria and Constantinople, and did a brisk trade in piracy upon passing vessels. The Knights of Rhodes were the Christian Corsairs of the Levant; the forests of Caramania furnished them with ships, and the populations of Asia Minor supplied them with slaves. So long as they roved the seas the Sultan's galleys were ill at ease. Even Christian ships suffered from their high-handed proceedings, and Venice looked on with open satisfaction when, in 1480, Mohammed II. despatched one hundred and sixty ships and a large army to humble the pride of the Knights. The siege failed, however; D'Aubusson, the Grand Master, repulsed the general assault with furious heroism, and the Turks retired with heavy loss.[14]