Res Gestae

Julian, however, being now happier in his lofty station and in the confidence which the soldiers felt in him, in order not to become lukewarm or be accused of negligence and sloth, after sending envoys to Constantius set out for the frontier of Second Germany, and, thoroughly equipped with all the material that the business in hand demanded, drew near to the city of Tricensima.[*](Modern Kellen; cf. xviii. 2, 4, note.)

Then crossing the Rhine, he suddenly invaded the territory of those Franks known as Atthuarii, a restless people, who even then were lawlessly overrunning the frontiers of Gaul. Having attacked them unexpectedly, when they feared no hostile demonstration and were quite off their guard, because they could remember no invasion of their land as yet by any emperor, protected as they were by rough and difficult roads, he defeated them with slight trouble; and after having captured or killed a great many, when the rest who survived begged for peace, he granted it on his own conditions,[*](ex arbitrio is rather a vague expression, but the context seems to make it clear.) thinking this to be to the advantage of the neighbouring settlers.

From there he returned with equal speed by way of the river, and carefully examining and strengthening the defences of the frontier, he came as far as Augst; and there having recovered the places which the savages had formerly taken and were holding as their own, he fortified them with special care and