Leonidas I

Leonidas I was a king of Sparta from the Agiad dynasty, who became one of history's most famous military commanders. Born around 540 BCE, he was not initially heir to the throne but became king following the deaths of his half-brother Cleomenes I and another brother. His most notable achievement was leading the combined Greek forces in the Battle of Thermopylae against the Persian Empire in 480 BCE. Leonidas led an allied Greek force of about 7,000 men, which included his famous personal guard of 300 Spartans. When it became clear that the Greeks would be surrounded due to a betrayal revealing a mountain path to the Persians, Leonidas dismissed most of the army, remaining with his 300 Spartans and some other Greeks to fight to the death. This last stand became legendary, symbolizing courage and self-sacrifice in the face of overwhelming odds. Leonidas was killed in the final battle, and his head was cut off and displayed by Xerxes. His sacrifice helped rally the Greek city-states and ultimately contributed to the defeat of the Persian invasion.