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
Ranks and insignia of the Red Army and Navy 1918–1935 created on September 1935, took first precedence over all ranks since then. With the new Marshal rank being introduced, the Council of People's Commissars began the process of phrasing out the 1924 rank system. Ranks and insignia of the Red Army and Navy 1918–1935 In the period from 1918 to 1935 of the young Soviet Union any bourgeois military thoughts were put under general suspicion by the communists, the new political establishment. Among others, the Old Russian tradition to wear epaulets and shoulder straps as rank insignia was rigorously abolished and was replaced with a new tradition of rank designations