Battle of Thermopylae (279 BC)

Battle of Thermopylae
Part of Gallic invasion of the Balkans
Route of the Gallic invasion of the Balkans
Date 279 BC Location Thermopylae Result Celtic victory
Belligerents
Celts	Aetolians Boeotians Athenians Phocians Locrians Megarians Macedonian, Greek and Syrian mercenaries
Commanders and leaders
Brennos Akichorios Orestorios Kombotis	Kalippos (Athenian contingent) Kephisodotos, Thearidas, Diogenes and Lysandros (Boeotian contingent) Kritobulos and Antiochos (Phokian contingent) Meidias (Locrian contingent) Hipponikos (Megarian contingent) Polyarchos, Polyphron and Lakrates (Aetolian contingent) Aristomedos (Macedonian mercenaries) Telesarchos (Greek and Syrian mercenaries)

The Battle of Thermopylae was fought in 279 BC between invading Gallic armies and a combined army of Greek Aetolians, Boeotians, Athenians, and Phocians at Thermopylae. The Gauls under Brennus were victorious, and advanced further into the Greek peninsula where they attempted to sack Delphi but were completely defeated.