Battle of Thermopylae at Thermopylae, the Persians sent a mounted scout to reconnoitre. The Greeks allowed him to come up to the camp, observe them, and depart. Xerxes found the scout's reports of the size of the Greek force, and that the Spartans were indulging in callisthenics and combing their long hair, laughable. Seeking the counsel of Demaratus, an exiled Spartan king in his retinue, Xerxes was told the Spartans were preparing for battle, and it was their custom to adorn their hair when they were about to risk their lives. Demaratus called them "the bravest men in Greece" and warned the Great
Battle of the Persian Gate the most serious challenge to Alexander's conquest of Persia. Michael Wood has called the battle decisive and A. B. Bosworth refers to it as a "complete and decisive victory for Alexander". Similarities between the battle fought at Thermopylae and the Persian Gates have been recognized by ancient and modern authors. The Persian Gates played the role "of a Persian Thermopylae and like Thermopylae it fell." The Battle of the Persian Gates served as a kind of reversal of the Battle of Thermopylae, fought in Greece in 480 BC in an attempt to hold off the invading Persian forces. Here, on