This is a list of known governors of the Roman province of Raetia . The province was created in 15 BC as an imperial equestrian province by the Emperor Augustus. The whole province (including Vindelicia) was at first under a praefectus , then under a procurator. Then when Legio III Italica was raised in 165, its commander became the effective governor of Raetia, until the province was assigned a legatus pro praetore starting in 174.