In the first century BC, Alpine tribes such as the Salassi, the Noricans and the Vindelici were raiding northern Italy, as far east as modern-day Slovenia, and blocking the passes to Germany and Transalpine Gaul. From around 30 BC to AD 8, the Romans waged an extensive campaign in modern-day Switzerland and Austria to suppress them. This camp may have been established during that campaign.
The Romans understood what Americans have seemed to forgotten. Controlling barbarians however difficult and expensive is mandatory if civilization is to exist and prosper. Ever wonder what the Romans would have thought of “defund the police” Democrats, “deincarceration”, and how the Democrats govern the big cities they control?