Battle of Thermopylae: Why Xerxes Couldn’t Break the Pass Until He Outflanked It

James From History

James From History

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The Battle of Thermopylae in 480 BC was more than the legendary last stand of 300 Spartans. Leonidas commanded a much larger Greek coalition whose heavy hoplites used the narrow coastal pass, disciplined formations, troop rotation, and longer spears to blunt repeated Persian attacks, including assaults by Xerxes’ elite Immortals. For two days, the terrain prevented the Persian army from fully exploiting its numerical advantage. The battle changed when Ephialtes revealed the Anopaia mountain path, allowing Persian troops under Hydarnes to bypass the main position and threaten the Greek rear. This documentary explores how geography shaped the fighting at Thermopylae, why frontal attacks repeatedly failed, how the Persian flanking maneuver broke the defensive position, and why Leonidas, the Spartans, Thespians, and other remaining defenders made their final stand at the Hot Gates.

Sources:
https://www.perseus.tufts.edu/hopper/text?...

https://www.perseus.tufts.edu/hopper/text?...

https://www.worldhistory.org/thermopylae/

https://www.history.com/articles/leonidas

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