Greece in the 5th century BC BC, the Greeks, under the Spartan Pausanias, defeated the Persian army at Plataea. The Athenian fleet then turned to chasing the Persians out of the Aegean Sea, defeating their fleet decisively in the Battle of Cape Mycale, and in 478 BC the Athenian fleet captured Byzantium. In the course of doing so Athens enrolled all the island states and some mainland allies into an alliance, called the Delian League because the League's treasury was kept on the sacred island of Delos. The Spartans, although they had taken part in the war, withdrew from any further involvement, allowing Athens to become
Battle of Mantinea (418 BC) Battle of Mantinea (418 BC) The First Battle of Mantinea of 418 BC was a significant engagement in the Peloponnesian War. Sparta and its allies defeated an army led by Argos and Athens. After the conclusion of the alliance between the Argives, Achaeans, Eleans and Athens, the humiliation of the Spartans in the 420 Olympic Games and the invasion of Epidaurus by the allies, the Spartans were compelled to move against them, fearing an alliance with Corinth and having amassed an army that was, according to Thucydides, 'the best army ever assembled in Greece to that time'. However, the Spartan