Roman conquest of Rhetia and the Alps
The Roman conquest of Rhetia and the Alpine arc from 16 to 7 BC was the prelude to the great invasion of Germania from 12 to 9 BC. The aim was to extend the Empire's northern frontiers to the Elbe and Danube rivers. == War of occupation == === Historical background === Despite the importance given to the theme of peace in Augustus' imperial propaganda, his principate was marked by a greater war effort than during the reign of most of his successors.
Source: Wikipedia — Roman conquest of Rhetia and the Alps (CC BY-SA 4.0)