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
Greece in the 5th century BC in Attica, attempting to take Athens, but were defeated at the Battle of Marathon by a Greek army of 9000 Athenian hoplites and 1000 Plateans led by the Athenian general Miltiades. The Persian fleet continued to Athens but, seeing it garrisoned, decided not to attempt an assault. During the subsequent period of peace, in 483 BC, a silver-bearing seam had been discovered in the Laurion (a small mountain range close to Athens), and the hundreds of talents mined there had paid for the construction of 200 warships to fight Aegina's piracy. In 480 BC, Darius' successor Xerxes I sent a