The Roman Empire used the Visigoths and other German tribes as elite troops to protect the emperor from both the plebeians (Deplorables) and the aristocracy as well. The Roman Empire initially let in the Visigoths as refugees fleeing the Huns and then used and abused them. The bulk of the tribesmen were poor and heavily abused by Romans and Roman law until the Visigoths revolted and they seized Rome and brought down the Empire.
Not even close.