How many of the 300 Spartans died?

The Heroic Stand at Thermopylae

One of the most legendary tales from ancient history recounts the defense of Thermopylae, where a narrow mountain pass was valiantly held for three days by a mere 300 Spartans against an immense Persian force. Tragically, 299 of these warriors lost their lives during the battle. The sole survivor returned to share the remarkable story with his people.