Four years later he captured Caryae, ravaged the territory of the Parrhasii and defeated the Arcadians, Argives and Messenians in the "tearless battle," so called because the victory did not cost the Spartans a single life.
Its military importance was recognized in 427 B.C. by the Spartans, who sent a garrison to guard the Trachinian plain against the marauding highland tribes of Oeta and built a citadel close by the Asopus gorge with the new name of Heraclea.
The Spartans failed to safeguard Heraclea against the Oetaeans and Thessalians, and for a short time were displaced by the Thebans (420).
The Spartans were successful but did not pursue their advantage, and soon afterwards the Athenians, seizing their opportunity, sallied forth again, and, after a victory under Myronides at Oenophyta, obtained the submission of all Boeotia, save Thebes, and of Phocis and Locris.
At the end of the Peloponnesian War Lysander restored the scattered remnants of the old inhabitants to the island, which was used by the Spartans as a base for operations against Athens in the Corinthian War.