The Battle of Arausio took place on 6 October 105 BC, at a site between the town of Arausio (modern day Orange, Vaucluse) and the Rhône River. Ranged against the migratory tribes of the Cimbri under Boiorix and the Teutoni were two Roman armies, commanded by the proconsul Quintus Servilius Caepio and consul Gnaeus Mallius Maximus. However, bitter differences between the commanders prevented the Roman armies from cooperating, with devastating results. The terrible defeat gave Gaius Marius the opportunity to come to the fore and radically reform the organization and recruitment of Roman legions. Roman losses are described as being up to 80,000 troops, as well as another 40,000 auxiliary troops (allies) and servants and camp followers — virtually all of their participants in the battle. In numbers of losses, this battle is regarded as the worst defeat in the history of ancient Rome.