This unit was recruited from among the various tribes of the province of Raetia, which comprised parts of western Austria, south-eastern Germany and the south-western Czech Republic. Cohors Quintae Raetorum is mentioned in Britain on a military diploma from 122AD which includes the unit among the northern army of governor Aulus Platorius Nepos. They are also mentioned on a single altarstone to the goddess Coventina recovered from the environs of the fort at Carrawburgh on Hadrian’s Wall. Their activities following the Hadrianic period are unknown.
Evidence for the presence of Cohors Quintae Raetorum in Britain
- Military Diplomata 122AD
- Carrawburgh (RIB 1529 altar).