Battle of Plataea other. The Allies initially adopted a strategy of blocking land and sea approaches to southern Greece. Thus, in August 480 BC, after hearing of Xerxes' approach, a small Allied army led by Spartan King Leonidas I blocked the Pass of Thermopylae, while an Athenian-dominated navy sailed to the Straits of Artemisium. Famously, the massively outnumbered Greek army held Thermopylae for three days before being outflanked by the Persians, who used a little-known mountain path. Although much of the Greek army retreated, the rearguard, formed of the Spartan and Thespian contingents, was surrounded and annihilated. The simultaneous Battle of Artemisium, consisting
Ancient Corinth ships coming from Athens, Ionia, Cyprus and the Levant. Both ports had docks for the city's large navy. In 491 BC, Corinth mediated between Syracuse and Gela in Sicily. During the years 481–480 BC, the Conference at the Isthmus of Corinth (following conferences at Sparta) established the Hellenic League, which allied under the Spartans to fight the war against Persia. The city was a major participant in the Persian Wars, sending 400 soldiers to defend Thermopylae and supplying forty warships for the Battle of Salamis under Adeimantos and 5,000 hoplites with their characteristic Corinthian helmets) in the following Battle of