At most they possessed some thirty thousand men, and a few hundred ships. By the spring of 480 Xerxes' army had reached Macedonia in the north of Greece. In response a contingent of 300 Spartans ...

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.