The Germanic peoples (also called Teutonic or Gothic in older literature) are an Indo-European ethno-linguistic group of Northern European origin, identified by their use of the Germanic languages which diversified out of Proto-Germanic during the Pre-Roman Iron Age.

The Battle of the Teutoburg Forest (described as clades Variana, the Varian disaster by Roman historians) (German: Schlacht im Teutoburger Wald, Hermannsschlacht or Varusschlacht) took place in 9 CE, when an alliance of Germanic tribes led by Arminius of the Cherusci ambushed and decisively destroyed three Roman legions, along with their auxiliaries, led by Publius Quinctilius Varus.

Despite numerous successful campaigns and raids by the Roman army over the Rhine in the years after the battle, the Romans were to make no more concerted attempts to conquer and permanently hold Germania beyond the river.

The Roman force was led by Publius Quinctilius Varus, a noble from a patrician family related to the Imperial family and an experienced administrative official, who was assigned to consolidate the new province of Germania in the autumn of 6 CE. In early 6 CE, before Varus was commander on the Rhine, it was Legatus Gaius Sentius Saturninus and Consul Legatus Marcus Aemilius Lepidus under Tiberius who led an army of 65,000 heavy infantry legionaries, 10,000–20,000 cavalrymen, archers, 10,000–20,000 civilians (13 legions & entourage, probably about 100,000+ men) and was planning a major attack on Maroboduus, the king of the Marcomanni, a tribe of the Suebi who had fled the attacks of Drusus I in 9 BCE into the territory of the Boii, where they formed a powerful tribal alliance with the Hermunduri, Quadi, Semnones, Lugians, Zumi, Butones, Mugilones, Sibini and Langobards.