The Battle of the Teutoburg Forest (German: Schlacht im Teutoburger Wald, Hermannsschlacht, or Varusschlacht), described as the Varian Disaster (Latin: Clades Variana) by Roman historians, took place in the Teutoburg Forest in 9 CE, when an alliance of Germanic tribes ambushed and destroyed three Roman legions and their auxiliaries, led by Publius Quinctilius Varus. The alliance was led by Arminius, a Germanic officer of Varus's auxilia. Arminius had acquired Roman citizenship and had received a Roman military education, which enabled him to deceive the Roman commander methodically and anticipate the Roman army's tactical responses.
Despite several successful campaigns and raids by the Romans in the years after the battle, they never again attempted to conquer the Germanic territories east of the Rhine river, except for Germania Superior.
