How many Spartans fought against the Persian "God-King" Xerxes in Zack Snyder's film?

At the Battle of Thermopylae, the 300 Spartans were joined by approximately 6,700 other Greek soldiers, bringing the total allied force to around 7,000 men. While the 300 Spartans were the most famous part of this force, they were not the only ones fighting. Other Greek city-states contributed troops, including Thespians, Thebans, and soldiers from various Peloponnesian cities

Weak movie without historical accuracy!

Arohanui, it was the 600. That was "The Charge of the Light Brigade" written to commemorate a battle involving the British during the Crimean War.

Arohanui, that is the British in Crimea, but ok