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),
Trousers and adolescents. Trousers are worn on the hips or waist and may be held up by their own fastenings, a belt or suspenders (braces). In Scotland, trousers are occasionally known as "trews", which is the historic root of the word "trousers". Trousers are also known as in Scots, a word related to "breeches". The item of clothing worn under trousers is underpants. The standard form "trousers" is also used, but it is sometimes pronounced in a manner approximately represented by , as Scots did not completely undergo the Great Vowel Shift, and thus retains the vowel sound of the Gaelic