Expansion of Macedonia under Philip II a significant problem, blocking the main route into Greece. However, a second route into central Greece was available. In 480 BC, during the Battle of Thermopylae, the Persian king Xerxes had sent his army via a mountain track (the "Anopea") to outflank the pass. From this track, on the western side of Mount Kallidromon, another road led off and descended in Phocis. In 480 BC, a thousand Phocian troops were stationed above Thermopylae to guard the road and prevent a Persian assault on Phocis (though they notably failed to prevent the Persians using "Anopea"). However, in 339 BC, the Greeks
Demophilus of Thespiae Demophilus of Thespiae Demophilus ( "Demophilos"), according to Herodotus, was the commander of a contingent of 700 Thespians at the Battle of Thermopylae (480 BC). His father was Diadromes (). Demophilus and his men fought at the battle and at the end they stood along with the 300 Spartans at the last stand, all were killed. The ancient Greek traveler and geographer Pausanias also wrote about the stay of the Thespians at Thermopylae together with the Spartans. After the Battle of Thermopylae, the Persian army burned down the city of Thespiae. The citizens had fled to the Peloponnese. Later, the