Tacitus also describes in his "Annales" how in 58 AD the Ampsivarii demanded to be allowed to use the reserved lands on Roman border at the Rhine which had recently belonged to the Usipii, but it is not clearly explained where or why the Usipii had moved. What is mentioned is that when the Ampsivarii retreated from the Romans, and apparently also away from the lands of the Bructeri and Tencteri (who had already stood down), they moved towards the lands of the Tubantes and Usipii. So the Usipi seem to have settled for some time after Caesar on the north of the Rhine, but then later moved further north, away from the Roman frontier, to become neighbours of the Tubantes.