He was transferred by Caesar to the Frumentarii following a brilliant tactical maneuver, when in a battle against an unnamed tribe he broke ranks and led his squad through a hole in the enemy defenses, capturing the tribe's chieftain. While his centurion wanted him crucified for disobeying orders, Caesar saw potential in the young officer and found other uses for him.
By 2281, Vulpes is the leader of the Frumentarii and the mastermind behind many of the Legion's intrigues, notably the conquests of Nipton and Camp Searchlight
