Essentially true story of how Spartan king Leonidas led an extremely small army of Greek Soldiers (300 of them his personal body guards from Sparta) to hold off an invading Persian army now ...
Persian King Xerxes led a Army of well over 100,000 (Persian king Xerxes before war has about 170,000 army) men to Greece and was confronted by 300 Spartans, 700 Thespians, and 400 Thebans.