Battle of Arausio
The Battle of Arausio took place on 6 October 105 BC, at a site between the town of Arausio, now Orange, Vaucluse, and the Rhône river. Wikipedia
Date: October 6, 105 BC
15,000 killed: Possibly 120,000 killed
Cimbri Teutons: Roman Republic
King Boiorix King Teutobod: Quintus Servilius Caepio; Gnaeus Mallius Maximus