This article concerns the Roman auxiliary regiments of the Principate period originally recruited in the western Alpine regions of the empire (for the central/eastern Alps, see Raetorum auxiliary cohorts). The cohortes Alpinorum (cohorts of Alpini) came from Tres Alpes, the three small Roman provinces of the western Alps, Alpes Maritimae, Alpes Cottiae and Alpes Graiae. The cohortes Ligurum were originally raised from the Ligures people of Alpes Maritimae and Liguria regio of NW Italia.