Battle of Thermopylae

Overview

The Battle of Thermopylae (480 BCE) was a famous last stand by a Greek force led by King Leonidas I of Sparta against the massive Persian army of Xerxes I during the second Persian invasion of Greece. @t[=480 BCE]

Key Facts

Date: August 480 BCE (three days) @t[=480 BCE]
Location: Thermopylae pass ("Hot Gates"), central Greece — a 15-metre-wide coastal gap with cliffs on one side and sea on the other @t[=480 BCE]
Belligerents: Greek alliance vs. Persian Empire (Achaemenid) @t[=480 BCE]
Commanders: Leonidas I (Sparta), Xerxes I (Persia) @t[=480 BCE]
Result: Persian victory, but costly delay @t[=480 BCE] ¹

Context

The battle was part of the second Persian invasion of Greece. Xerxes I (r. 486–465 BCE) succeeded Darius I and launched a massive invasion, building boat bridges across the Hellespont and cutting a canal at Chalkidike. The oracle at Delphi had warned Athens to "fly to the world's end." ²

The Battle

Greek force of ~6,000–7,000 men held the narrow pass, including 300 Spartans, 700 Thespians, 1,000 Phokians, 1,000 Lokrians, 400 Thebans, 400 Corinthians, 2,120 Arcadians, and others @t[=480 BCE] ²
The 300 Spartans were chosen specifically from men who had male heirs @t[=480 BCE] ²
Greeks exploited the narrow terrain to negate Persian numerical advantage; Persian archers' light arrows were largely ineffective against bronze-armoured hoplites @t[=480 BCE] ²
Xerxes first waited four days expecting the Greeks to flee; Leonidas' reply to a demand to lay down arms was "Molōn labe" ("Come and take them") @t[=480 BCE] ²
On days one and two, even the elite Persian Immortals (10,000-strong) failed to break the Greek line @t[=480 BCE] ²
Betrayed by Ephialtes of Trachis, who revealed the Anopaia mountain path to outflank the Greeks @t[=480 BCE] ¹²
Phokian troops guarding the Anopaia path withdrew to higher ground when the Immortals attacked, allowing the Persians to pass @t[=480 BCE] ²
Leonidas dismissed most allies; ~300 Spartans, ~700 Thespians, and ~400 Thebans fought to the death in a rearguard action @t[=480 BCE] ¹
Leonidas was killed in the final stand; Xerxes ordered his head displayed on a stake @t[=480 BCE] ²
Archaeological excavations at Kolonos Hill (the traditional last-stand site) have uncovered spearheads, arrowheads, armor fragments, and evidence of mass cremations consistent with ancient Greek funerary practices @t[=480 BCE] ³

Legacy

Epitaph by Simonides of Ceos: "Go tell the Spartans, stranger passing by, that here obedient to their laws we lie" @t[~480 BCE..] ⁴
Bought time for the Greek fleet at Artemisium and the subsequent victory at Salamis (September 480 BCE) @t[=480 BCE]
Persian invasion was ultimately repulsed at Plataea (479 BCE) @t[=479 BCE]
Thermopylae was again the site of battle in 279 BCE (Greeks vs. Gauls), 191 BCE (Romans defeated Antiochus III), and 1941 CE (Allied forces vs. Germany) ²
Became the archetypal story of sacrifice against overwhelming odds @t[480 BCE..]

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