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 Thermopylae (191 BC) only the Aetolian League actually joined forces with Antiochus; other states either remained neutral or sided with the Romans. Antiochus managed to capture some cities in Greece, but was unable to obtain reinforcements from Asia before in 191 BC a large Roman army under the consul Manius Acilius Glabrio crossed from Italy and advanced on his position. Knowing he was outnumbered around 2:1 by the approaching Roman army, Antiochus hoped to use the narrow pass at Thermopylae to his advantage, taking inspiration from the earlier Greek city-states' stand against the much larger Persian army at the Battle of Thermopylae (480