After graduating from Sandhurst, Farran was commissioned as a Second Lieutenant into the 3rd Carabiniers (Prince of Wales's Dragoon Guards) and sent to the 51st Training Regiment.
Nach seinem Abschluss in Sandhurst kam Farran als Unterleutnant zu den 3rd Carabiniers (Prince of Wales's Dragoon Guards) und wurde ins 51. Training Regiment versetzt.