Early attempts Emperor
Valentinian I was campaigning against the
Alamanni at the time and so was unable to respond personally. A series of commanders to act in his stead were chosen but swiftly recalled. The first was Severus, the emperor's , who was recalled and replaced by
Jovinus, the . After discovering that the local had collaborated with the invaders, Theodosius removed them from their positions. By the end of the year, the barbarians had been driven back to their homelands; the mutineers had been executed; Hadrian's Wall had been retaken, and order had returned to the diocese. Under Civilis's rule, the last of the earlier invaders were temporarily driven out in 369, possibly using troops under his own personal command, and a program of civil restoration began. Theodosius also overcame and defeated the force of Valentinus, a
Pannonian who had been exiled to Britain and joined the invaders. Considerable reorganization was undertaken in Britain, including the creation of
Valentia, probably to better address the state of the far north. The poet
Claudian suggests that naval activity took place in northern Britain. It is possible that Theodosius mounted
punitive expeditions against the barbarians and imposed terms upon them. Certainly, the later records four units of Attacotti serving Rome on the continent. The were removed from duty and the frontiers refortified with co-operation from border tribes such as the
Votadini, which marked the career of men such as
Paternus. ==Political effects==