The uniforms of the Canadian Armed Forces are the official dress worn by members of Canada's military while on duty. Prior to the unification of the Canadian Armed Forces, the uniforms of the Canadian Army, Royal Canadian Air Force (RCAF) and Royal Canadian Navy (RCN) were similar to their counterparts in the forces of the United Kingdom and other Commonwealth countries, save for national identifiers and some regimental accoutrements. With the unification of the Canadian Forces in 1968, all service branches began to wear Canadian Forces rifle green uniforms. Distinctive Environmental Uniforms (DEUs) for the various branches of the Canadian Forces was introduced in the late 1980s, and are generally similar to their pre-unification uniforms. Numbered Orders of Dress No. 1 (Ceremonial) Dress Full formal dress uniforms for ceremonial parades and other special occasions. No. 1 (Accoutrements): Service Dress (see below) uniform with medals and ceremonial accoutrements (swords, white web belts, gloves, etc.). No. 1A (Medals Only): Service Dress uniform with medals, but no ceremonial accoutrements. No. 1B (Full Dress): Regimental full dress (such as scarlet tunics and bearskin hats of Guards regiments). Regimental uniforms are normally not provided at public expense; purchase of these uniforms is done either by individuals or by various regiments out of non-public funds. No. 1C (Semi-Ceremonial): Patrol dress (a slightly less elaborate regimental uniform) or the Navy high-collared white jacket. No. 1D (Undress Ribbons): No. 1C worn with ribbons instead of medals. No. 2 (Mess) Dress Formal evening attire for mess dinners. Mess dress is not provided at public expense; however, all commissioned officers of the Regular Force are required to own mess dress within six months of being commissioned. No. 2 (Mess Standard): Full mess kit with mess jackets, cummerbunds or waistcoats, etc. No. 2A (Mess White): No. 2 with summer white jacket. No. 2B (Mess Service): No. 3 with white dress shirt and bow tie; worn by CF members who do not own No. 2 mess dress. No. 2C (Mess Shipboard): No. 3B with a cummerbund and without ribbons or name tag; worn as evening wear on board ship. Sometimes called Red Sea rig. No. 2D (CAF Mess Standard): Air Force members are permitted to continue wearing the unified CAF pattern of mess dress. No. 3 (Service) Dress Also called a "walking-out" or "duty uniform", it is the military equivalent of the business suit; it is the standard uniform for appearing in