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),
Uniforms of the United States Air Force trousers replaced these. Early versions of the short-sleeve Shade 1550 shirt in the 1970s were characterized by small pin-on metal rank insignia for officers, similar to what had been the case for the 1505 shirt, while enlisted personnel continued to wear sewn-on cloth sleeve rank insignia. This variant was later replaced by a new short-sleeve shirt in Shade 1550, plus a long-sleeve shirt in Shade 1550 with dark-blue (Shade 1549) tie, both of which incorporated buttonable shoulder epaulette straps. For officers, a dark-blue slip-on "soft rank" shoulder loop was created to slide over the epaulettes, with rank insignia consisting of