Nicodromus occurred prior to the battle of Marathon. Overtures were unquestionably made by Thebes for an alliance with Aegina , but they came to nothing. The refusal of Aegina was in the diplomatic guise of "sending the Aeacidae." The real occasion of the beginning of the war was the refusal of Athens to restore the hostages some twenty years later. There was but one war, and it lasted from 488 to 481 BC. That Athens had the worst of it in this war is certain. Herodotus had no Athenian victories to record after the initial success, and the fact that Themistocles was able to carry his proposal to devote the surplus funds of the state to the building of so large a fleet seems to imply that the Athenians were themselves convinced that a supreme effort was necessary. It may be noted, in confirmation of this opinion, that the naval supremacy of Aegina is assigned by the ancient writers on chronology to precisely this period, i.e. the years 490–480 BC. Decline In the repulse of Xerxes I it is possible that the Aeginetes played a larger part than is conceded to them by Herodotus. The Athenian tradition, which he follows in the main, would naturally seek to obscure their services. It was to Aegina rather than Athens that the prize of valour at Salamis was awarded, and the destruction of the Persian fleet appears to have been as much the work of the Aeginetan contingent as of the Athenian (Herod. viii. 91). There are other indications, too, of the importance of the Aeginetan fleet in the Greek scheme of defence. In view of these considerations it becomes difficult to credit the number of the vessels that is assigned to them by Herodotus (30 as against 180 Athenian vessels, cf. Greek History, sect. Authorities). During the next twenty years the Philo-Laconian policy of Cimon secured Aegina, as a member of the Spartan league, from attack. The change in Athenian foreign policy, which was consequent upon the ostracism of Cimon in 461 BC, resulted in what is sometimes called the First Peloponnesian War, during which most of the fighting was experienced by Corinth and Aegina. The latter state was forced to surrender to Athens after a siege, and to accept the position of a subject-ally (). The tribute was fixed at 30 talents. By the terms of the Thirty Years' Peace (445