 As a border people, the Helvii played a crucial if limited role in the Gallic Wars under the leadership of Gaius Valerius Caburus, who had held Roman citizenship since 83 BC, and his sons Troucillus and Domnotaurus.Julius Caesar calls the Helvii a "civitas," a polity with at least small-scale urban centers ("oppida"), and not a "pagus" ("sub-tribe").They are mentioned as "Helviorum (var.