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The Persians had invaded Greece twice before Plataea. At Marathon, Athens stoppe
479 BC Event

August 27

Battle of Plataea: Sparta and Athens Destroy the Persian Army

The Persians had invaded Greece twice before Plataea. At Marathon, Athens stopped them alone. At Thermopylae, a small Spartan force held long enough for the fleet to retreat. On August 27, 479 BC, the Greek alliance faced Mardonius's Persian army outside the ruins of Plataea. The Persian cavalry was neutralized. Mardonius was killed. The army collapsed. On the same day, across the Aegean, the Persian fleet was defeated at Mycale. Both victories on the same day. The Persian threat to Greece was over.

August 27, 479 BC

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