British Army officer rank insignia were ordered to wear the same collar as other General officers, but no device in the collar. In 1880, War Office ordered to move rank badges from collar to shoulder. In 1921, the War Office abolished the rank of Brigadier General and introduced a new rank called Colonel Commandant (Officer commanding a Brigade) or Colonel on the staff (officer not commanding a Brigade, but staff officer). The badges of Colonel Commandant and Colonel on the staff were the same, consisting of a crown and three stars. In 1928, Brigadier rank was introduced by abolishing the ranks of Colonel Commandant and
United States Air Force officer rank insignia the Air Force Henry H. Arnold. Federal law currently contains no provisions to promote an officer to five-star grade. On the Air Force Mess Dress uniform, officer rank insignia are embroidered in silver or gold thread on detachable shoulder boards which are attached to the mess dress jacket. No rank insignia are worn on the mess dress shirt. On the service dress uniform, metal rank insignia pins are worn on the epaulets of the Air Force Blue service dress jacket. Rank insignia are also worn on epaulets which slide onto the epaulet loops on the light blue shirt; the rank