During the period of concentration it was Veniero who had the most difficult problem to solve. The Venetian fleet had separated into two divisions at the close of the campaign of 1570. The weaker wintered in the harbours of Crete. The stronger detachment passed the winter at Corfu, in the Ionian islands. In the early summer of 1571 Veniero took command at Corfu, and occupied himself with preparing the fleet for sea, and reinforcing it with new galleys from the arsenal of Venice, and newly raised drafts of sailors, rowers, and fighting-men. Before his preparations were complete, the vanguard of the Turkish armada, continually reinforced from the East, appeared on the western coasts of Greece. To attack them with the force he had at hand would be to court destruction. Ulugh Ali, who commanded the vanguard of the enemy, was perhaps the best-hated of the Moslem admirals. A Calabrese fisherman, he had been captured as a young man by one of the Barbary corsairs, and spent some miserable years chained as a galley-slave at an oar. At last his endurance broke down, and he escaped from his misery by becoming a Mohammedan. Under his new name he rose rapidly to command, enriched himself by successful piracy, and before long won himself the rank of a Pasha and a vice-royalty in North Africa. But, happily for Europe at large, though unfortunately for many a village along the shores of Greece and Illyria, Ulugh Ali as admiral of the Turkish fleets remained still a pirate, with the fixed idea that a plundering cruise was better than a naval campaign. Had the renegade been more admiral than pirate, he had an opportunity of changing the course of history in that early summer of 1571. His fleet cruising off the coasts of Epirus held a central strategic position in relation to the still dispersed Christian fleets. The papal contingents on the western shores of Italy and the Spanish fleets in the ports of the Two Sicilies, or coasting from Spain by the Gulf of Lyons and the Italian shores, were, it is true, beyond his immediate reach, but he could easily lop off one important branch of the triple League by cutting off the Venetians. The squadron from Crete must pass him to the southward; the more important contingent from Corfu must pass between him and Southern Italy in narrow seas where he could hardly fail to bring it to action, and if it fought, the chances were he would overwhelm it. Or he might attack it at Corfu, or drive it from the island back upon Venice. If he had good luck he might hope to be in time even after this to strike a blow also at the Cretan squadron.