Julian defeated them completely, but allowed them to remain in Toxandria, not, as of old, as conquerors, but as foederati of the Romans.
For some time before 341 he worked as a lector (reader of the Scriptures), probably among his own countrymen in Constantinople, or among those attached as foederati to the Imperial armies in Asia Minor.
In the year 394 he served as a general of foederati (Gothic irregulars) under the emperor Theodosius in the campaign in which he crushed the usurper Eugenius.
The employment of barbarians as foederati, which became a common practice with the emperors in the 4th century, was both a symptom of disease in the body politic of the empire and a hastener of its impending ruin.
This, however, was denied him, and he found that he was doomed to remain an officer of foederati.