When “the Grand Period” came to an end, as it did about the date already indicated, the corsairs had become a permanent institution; they remained established at Algiers, Tunis, and other ports on the littoral of Northern Africa as a recognised evil. Pirates they remained to the end of the chapter, the scourge of the tideless sea; but no longer did they array themselves in line of battle against the mightiest potentates of the earth allied for their complete destruction. It was the men of the sea who set up this empire; it was they who defied Charles V., a whole succession of Popes, Andrea Doria and his descendants, the might of Spain, Venice, Genoa, Catalonia, and France. It was they who taught the so-called civilised world of the age in which they lived that sea-power can only be met and checked by those who dispose of navies manned by seamen; that against it the master of the mightiest legions of the land is powerless. This contention is by no means invalidated by the fact that frequently the corsairs were defeated by land forces embarked on board ship. Thus when Dragut was defending Tripoli against an expedition sent against him in 1559 by the combined forces of Spain, Tuscany, Rome, Naples, Sicily, and Genoa, of one hundred sail which embarked fourteen thousand troops, he was relieved by Piali, the Admiral of Soliman the Magnificent, who came to his assistance with eighty-six galleys, each of which had on board one hundred Janissaries, and who gained so striking a victory over the Christians that the Turkish Admiral returned to Constantinople with no less than four thousand prisoners. But in this case, as in so many others, the actual hostilities took place on shore, where the troops had the opportunity of displaying their sterling qualities. There is very little doubt that critics will point out that the corsairs were by no means universally successful; that, as in the case of the attack by Hassem, the ruler of Algiers in 1563, on Oran and Marzaquivir (a small port in the immediate vicinity of Oran), in the end the Moslems were badly beaten. This undoubtedly was the case, and there is no desire to magnify the deeds of the Sea-wolves or to minimise the heroic defence of Marzaquivir by the Count of Alcaudete, or that of Oran by his brother, Don Martin de Còrdoba, At the last moment of their wonderful defence they were relieved by a fleet sent by the King of Spain, and Hassem had to abandon his artillery, ammunition, and stores and beat a hasty retreat to the place from whence he had come. There was nothing remarkable in the fact that the corsairs were frequently defeated; what is really strange is that they should have achieved so great a success—success vouched for by the concrete instance that they established those sinister dynasties on the coast of Northern Africa which were the outcome of their piratical activities.