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caligirl559
Battle of Thermopylae. 300 Spartans under king Leonidas and other Greek allies hold back the persians led by Xerxes l  for three days but are defeated. 
mhaynes766

Answer:

Spartans (Greek Warriors) and Persians

Explanation:

The Battle of Thermopylae was fought between an alliance of Greek city-states, led by King Leonidas I of Sparta, and the Achaemenid Empire of Xerxes I. It was fought over the course of three days, during the second Persian invasion of Greece.