You've seen the 300 die at Thermopylae. But almost nobody knows what happened next. One year later, Sparta came back with ten thousand. And this time, they didn't lose. In this video: Why Persia stayed in Greece after Thermopylae The Greek alliance that almost collapsed before the battle How Mardonius made the one mistake that cost him everything The moment ten thousand Spartans broke the Persian Immortals in open combat Why Plataea — not Thermopylae — actually ended the Persian invasion 📍 Battle of Plataea — August 479 BCE Greek coalition: ~80,000 (incl. 10,000 Spartans, 8,000 Athenians) Persian forces: ~100,000 under Mardonius Result: Decisive Greek victory. Persian invasion ended permanently. 🔗 Subscribe for more battles every week. #plataea #sparta #300spartans #thermopylae #persianwars #ancientgreece #greekhistory #spartans #persianempire #battleofplataea #ancientbattles #historyanimated #warstories #militaryhistory #tactics