Uniforms of the Royal Marines musicians, plus cadets and instructors of the affiliated cadet organisations. This is the same as 1B dress but is worn with medal ribbons instead of medals and decorations. This consists of a scarlet mess jacket with a royal blue shawl collar, worn with royal blue trousers with a scarlet stripe, Marcella shirt and royal blue mess waistcoat. Officers above the rank of brigadier have their rank on shoulder straps, whilst all other officers have their rank marking positioned horizontally on the lapels of the collar. Officers of the rank of lieutenant-colonel wear stiff-fronted shirts and overalls (tight fitting cavalry trousers),
Shoulder mark of the Order of the Arrow. Rank slides are used by all of the UK Armed Forces, primarily on working dress uniforms. Shoulder boards are worn by officers on tropical dress uniform, bearing the same insignia carried on the cuffs of the dress uniform. A slide worn on the chest is used to indicate rank for all RN personnel in Action Working Dress (No.4 dress). In the British Army, shoulder straps are worn with dress and service uniforms. In combat dress, however, rank insignia is displayed on 'rank slides' worn on the chest. In the Royal Air Force, rank slides