Answer: Battle of Thermopylae
Explanation: The Greeks held off the Persians killing thousands until the Persians found a way around the mountains and got behind the Greeks. King Leonidas told most of his troops to flee but stayed behind with a small force including his 300 Spartans in order to allow the rest of the Greek army to escape.
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It was "Maximilien Robespierre" who was considered to be the leading figure during the French Revolution's Reign of Terror, since he sought the swift and brutal punishment of anyone associated with the monarchy.