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
Battle of Himera (480 BC) aid to avenge the death of Dorieus was ignored by mainland Greece, even by Leonidas of Sparta, brother of Dorieus and who later would win immortal fame at Thermopylae in 480 BC. This possibly demonstrated the futility of opposing Carthage by single Greek cities or the unreliability of aid from mainland Greece, a situation that would change with the rise of the Greek tyrants in Sicily. While Carthage remained engaged in Sardinia after 510 BC, most of the Greek colonies in Sicily fell under the rule of tyrants. The tyrants of Gela, Akragas and Rhegion successfully expanded their dominion at