Teutobod in the context of "Battle of Aquae Sextiae"

The Ambrones (Ancient Greek: Ἄμβρωνες) were an ancient tribe mentioned by Roman authors. They are believed by some to have been a Germanic tribe from Jutland; the Romans were not clear about their exact origin.

In the late 2nd century BC, along with the Cimbri and Teutons, the Ambrones migrated from their original homes and invaded the Roman Republic, winning a spectacular victory at the Battle of Arausio in 105 BC. The Ambrones and the Teutons, led by Teutobod, were eventually defeated at the Battle of Aquae Sextiae in 102 BC.

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, where two Roman armies, commanded by proconsul Quintus Servilius Caepio and consul Gnaeus Mallius Maximus, were heavily defeated after clashing with the migratory tribes of the Cimbri under Boiorix and the Teutons under Teutobod.

Differences between the Roman commanders prevented regular coordination between their armies, resulting in annihilation by the united Cimbrian-Teutonic force. Roman losses are thought to have been up to 80,000 legionaries in addition to 40,000 auxiliary troops. Total losses numbered up to 120,000 soldiers, the entirety of both armies. In terms of losses, this battle is regarded as the worst defeat in the history of ancient Rome, surpassing the Battle of Cannae. As a direct result of the catastrophe, the Roman military was restructured under Gaius Marius via putative reforms to the organisation and recruitment of Roman legions, which would remain principally intact for centuries thereafter. Some historians contest the existence of sudden reforms under Marius.