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
Uniforms of the United States Air Force to those worn by commissioned officers of the U.S. Navy. Cadets and officer trainees wear insignia on their shoulder boards as applicable to their pre-commissioning rank position in their respective officer accession programs. Commissioned officer shoulder boards for colonels and below feature an officer's rank insignia in raised metallic thread, bordered by two silver vertical metallic stipes similar to sleeve braid. General officers wear shoulder boards covered nearly the entire length and width in silver metallic braid, with silver stars in raised metallic thread in number appropriate to their rank. Enlisted personnel wear the same large rank insignia that they