On the death of Aristides, Cimon became the undisputed leader of the conservative party at Athens. Cimon was generous, affable, magnificent; and, notwithstanding his political views, of exceedingly popular manners. He had inherited the military genius of his father, and was undoubtedly the greatest commander of his time. He employed the vast wealth acquired in his expeditions in adorning Athens and gratifying his fellow-citizens. It has been already mentioned that he succeeded Aristides in the command of the allied fleet. His first exploits were the capture of Eion on the Strymon, and the reduction of the island of Scyros (B.C. 476). A few years afterwards we find the first symptoms of discontent among the members of the Confederacy of Delos. Naxos, one of the confederate islands, and the largest of the Cyclades, revolted in B.C. 466, probably from a feeling of the growing oppressiveness of the Athenian headship. It was immediately invested by the confederate fleet, reduced, and made tributary to Athens. This was another step towards dominion gained by the Athenians, whose pretensions were assisted by the imprudence of the allies. Many of the smaller states belonging to the confederacy, wearied with perpetual hostilities, commuted for a money payment the ships which they were bound to supply; and thus, by depriving themselves of a navy, lost the only means by which they could assert their independence. The same year was marked by a memorable action against the Persians. Cimon at the head of 200 Athenian triremes, and 100 furnished by the allies, proceeded to the coast of Asia Minor. The Persians had assembled a large fleet and army at the mouth of the river Eurymedon in Pamphylia. After speedily defeating the fleet, Cimon landed his men and marched against the Persian army which was drawn up on the shore to protect the fleet. The land-force fought with bravery, but was at length put to the rout. The island of Thasos was the next member of the confederacy against which the Athenians directed their arms. After a siege of more than two years that island surrendered, when its fortifications were razed, and it was condemned to pay tribute (B.C. 463).