Muley-Hassan, king of Tunis, driven from his states by Barbarossa, the terror of the Mediterranean, came to implore the aid of Charles V. That prince, touched by the prayers of the Barbary monarch, swore to replace him on his throne. He assembled a fleet of three hundred ships, on board of which were twenty-five thousand foot and two thousand horse, set sail from Cagliari, and arrived at Porto-Farina, formerly Utica. As that port was not very secure, the fleet again weighed anchor, and brought to within cannon-shot of the Gouletta. The whole Christian army landed without the least opposition on the part of the Mussulmans. The generals pitched their tents between Carthage and the Water Tower, and surrounded it with wide deep lines, fortified with redoubts. This was the exact spot on which Louis IX. had formerly placed his camp. The trenches were opened, and three batteries were raised against the fortress. Whilst the place was being cannonaded by land, the galleys advanced by turns and delivered their broadsides; the grand caique of Malta and a Portuguese galleon destroyed a part of the fortifications and dismounted the batteries of the town. The place being open in several places, it was determined to carry it by the sword. The Christians mounted to the assault, forced the breaches, gained the bulwarks and the top of the tower, and took possession of them. Chasse-Diable, and Sinan the Jew, leaders of the defenders of the Gouletta, being unable to resist the imperial conquerors, retired into Tunis, where their arrival spread terror and despair. The emperor entered this fortress, followed by Muley-Hassan, to whom he said, “This is the door by which you will re-enter your states.”