The Battle of T was fought between an alliance of Greek city-states, led by King Leonidas of Sparta, and the Persian Empire of Xerxes I over the course of three days, during the second Persian invasion of Greece.
20 August or 8–10 September 480 BC
Both ancient and modern writers have used the Battle of Thermopylae as an example of the power of a patriotic army defending its native soil. The performance of the 300 defenders is also used as an example of the advantages of training, equipment, and good use of terrain as force multipliers and has become a symbol of courage against overwhelming odds.