when did this battle take place?
in August or September 480 BC
Battle of Thermopylae
 It took place simultaneously with the naval battle at Artemisium, in August or September 480 BC, at the narrow coastal pass of Thermopylae ("The Hot Gates").
who played the hunchback in the movie 300 Ephialtes who composed the soundtrack for it? Tyler Bates any particular song which he composed on it? Remember Us and Returns a King who is the main character in the movie? Leonidas I is he based on a real-life character? Yes who? King Leonidas I what was the battle portrayed in the movie which he was a part of? Battle of Thermopylae
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Battle of Thermopylae [SEP] Introduction
The Battle of Thermopylae ( ; Greek: , "Máchē tōn Thermopylōn") was fought between an alliance of Greek city-states, led by King Leonidas I of Sparta, and the Achaemenid Empire of Xerxes I over the course of three days, during the second Persian invasion of Greece. It took place simultaneously with the naval battle at Artemisium, in August or September 480 BC, at the narrow coastal pass of Thermopylae ("The Hot Gates"). The Persian invasion was a delayed response to the defeat of the first Persian invasion of Greece, which had been ended by the Athenian victory at the Battle of Marathon in 490 BC.