Battle of Thermopylae (279 BC)

Battle of Thermopylae
Part of Gallic invasion of the Balkans

Route of the Gallic invasion of the Balkans
Date279 BC
Location
Result Gallic victory
Belligerents
Gauls

Aetolians
Boeotians
Athenians
Phocians

Locrians

Megarians

Macedonian mercenaries

Seleucid Greek and Syrian mercenaries
Commanders and leaders

Brennus

Acichorius

Orestorius

Combutis

Calippus (Athenian cotingent)

Cephisodotus, Thearidas, Diogenes and Lysander (Boeotian contingent)

Critobulus and Antiochus(Phokian Contingent)

Meidias (Lokrian Contingent)

Hipponicus (Megarian Contingent)

Polyarchus, Polyphron and Lacrates (Aetolian Contingent)

Aristomedus (Macedonian greek mercenaries)

Telesarchus (Seleucid 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.