 In 395 BC, the Thebans, under the command of Ismenias, wrested this important place from the Spartans, killed the Lacedaemonian garrison, and gave the city to the old Trachinian and Oetaean inhabitants.The walls of Heraclea were destroyed by Jason of Pherae, lest any state should seize this place and prevent him from marching into Greece.At a later time Heraclea came into the hands of the Aetolians, and was one of the main sources of their power in Northern Greece.