Expansion of Macedonia under Philip II a significant problem, blocking the main route into Greece. However, a second route into central Greece was available. In 480 BC, during the Battle of Thermopylae, the Persian king Xerxes had sent his army via a mountain track (the "Anopea") to outflank the pass. From this track, on the western side of Mount Kallidromon, another road led off and descended in Phocis. In 480 BC, a thousand Phocian troops were stationed above Thermopylae to guard the road and prevent a Persian assault on Phocis (though they notably failed to prevent the Persians using "Anopea"). However, in 339 BC, the Greeks
The 300 Spartans Battle of Marathon ten years before. Accompanying him are Artemisia, the Queen of Halicarnassus, who beguiles Xerxes with her feminine charm, and Demaratus, an exiled king of Sparta, to whose warnings Xerxes pays little heed. In Corinth, Themistocles of Athens wins the support of the Greek allies and convinces both the delegates and the Spartan representative, Leonidas I, to grant Sparta leadership of their forces. Outside the hall, Leonidas and Themistocles agree to fortify the pass at Thermopylae until the rest of the army arrives. After this, Leonidas learns of the Persian advance and travels to Sparta to spread the