The legion was deployed in the city called Legio (modern-day León, Spain) in AD 74 and remained in Hispania to the end of the 4th century.
It appears to have received the appellation of "Gemina"[2] on account of its amalgamation by Vespasian with one of the German legions, not improbably the Legio I Germanica.
The following are a selection, in order of time:[6] The legion had units stationed at their extended fortified camps: Also under the legion were five auxiliary units, a cavalry wing, two cohorts of equitatae and two of peditatae: During the majority of its existence, the number of effectives under the military commander of the VII were usually around the 7,712 between auxiliaries and regulars, not counting local levies and other reinforcements sent from Rome for temporary services.
The station of this legion in the Gallaecia Roman province grew into an important city, León, that after the invasions of 409 AD in Iberia became part of the Suevic Kingdom, which resisted the attacks of the Visigoths until 586, when it was taken by Leovigild.
The Roman bridge over the Tâmega River in Chaves, Portugal, then Aquae Flaviae, was built by the stationed legionaries of the Legio VII Gemina at the time of Trajan.