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 and insignia of the Kriegsmarine sailor would be referred to by their rate and rank (i.e. "Steuermannmaat"). Rank was denoted by a collar tab while rate was displayed as a larger patch replacing the former sailor sleeve chevron and rating badge. A special petty officer rating insignia existed for those "Maat" who were unrated; a rare occurrence but sometimes happening with those in highly specific career fields who had enlisted directly as a petty officer or who had never held an enlisted rate as a seaman. Chief petty officers were addressed solely by their rate and wore rating insignia centered on their shoulder straps. The