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
Shoulder mark and affixed to the underside of the board. This effectively hides all the means of attachments, leaving a firm, finished surface. This particular style is what U.S. Air Force personnel call a "shoulder board". The shoulder sleeve is called an epaulette, and the two are never confused. On the United States Army Blue Service Uniform, officers wear embroidered rank insignia "shoulder straps" mounted lengthwise on the outside shoulder seams. These are 1⅝ inches wide by 4 inches/3½ inches (large size/small size) long, and are sewn, snapped, or clipped onto each shoulder. The Boy Scouts of America uses colored shoulder loops