Royal Navy officer rank insignia the Corps also had the unique ranks of colonel second commandant and colonel commandant. Rank insignia are on brown or dark blue shoulder boards in all dresses save for the combat and barracks duty dress uniforms. From 1911 to 1957 the officer corps even included warrant officers and commissioned warrant officers in the same way as the RN. Although the Royal Marines does not officially use the rank of field marshal, the Captain General Royal Marines, the ceremonial head of the corps, wears a field marshal's rank insignia. Royal Navy officer rank insignia Uniforms for naval officers were not authorised
British Army officer rank insignia 1919, a new order was issued by the Horse Guards office—all Guards officers would wear special star badges. During World War I, some officers took to wearing tunics with the rank badges on the shoulder, as the cuff badges made them too conspicuous to snipers. This practice was frowned on outside the trenches but was given official sanction in 1917 as an optional alternative, being made permanent in 1920, when the cuff badges were abolished. British Army officer rank insignia Listed in the table below are the insignia—emblems of authority—of the British Army. Badges for field officers were first introduced