unit's facing colours on the tunic's collar, and shoulder strap. The tunic's sleeve also has a trefoil-shaped Austrian knot embroidered on the exterior cuff. The authorized headgear for the universal full dress uniform is a white Wolseley helmet. A white ceremonial belt is also authorized for ceremonial wear. Although the Canadian Army maintains a universal design for its ceremonial dress, many regiments in the Canadian Army are authorized regimental differences from the universal full dress pattern, including some armoured units, Scottish regiments, and all artillery, and Voltigeur/rifle regiments. Authorized regimental differences for headgear include a bearskin cap for foot guards and fusiliers, a busby for rifles/Voltigeurs (excluding Les Voltigeurs de Québec, which uses a shako), a feather bonnet for Scottish regiments, and several different authorized headgears for armoured regiments. A number of regiments are also authorized to wear different brass buckles on their belts, bearing the badge of their respective regiments. Most of the Canadian Army's ceremonial embellishments emerged from a simplified system ordered by the Monarch of Canada in 1902, and later promulgated in the Canadian Militia Dress Regulations 1907, and Militia Order No. 58/1908 for non-commissioned officer. Regular Force regiments The following regular force regiments have authorized full dress (No. 1B). Reserve Force regiments The following reserve force regiments have authorized full dress (No. 1B) and undress (Nos. 1C and 1D, also known as patrol dress) uniforms. Royal Canadian Air Force Full dress uniforms for units of the RCAF include a blue tunic, and blue trousers and facings. Air Force pipe bands are the only RCAF units authorized to wear full-dress uniform. History From 1925 to 1940, full dress was authorized for all commissioned officers of the RCAF. It was optional for all officers when first introduced, and from 1 August 1935 was mandatory only after five year's paid service in the Permanent Active Air Force or on substantive promotion to the rank of flight lieutenant. On 30 August 1940, the wear of full dress and mess dress was "suspended for the duration of hostilities". Full dress was subsequently removed from the RCAF dress regulations in 1944 and, unlike mess dress, was not re-introduced following the end of the Second World War. Royal Canadian Navy Full dress for members of the RCN includes a navy blue tunic and trousers with white facings, although the Canadian Forces dress instructions state that naval full dress is no longer issued. The