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
Royal Navy ratings rank insignia badge. In 1970 a new rank of Fleet chief petty officer was introduced, with insignia of the royal coat of arms on the lower arm (identical to a warrant officer class 1 in the army and RAF, to which the new rank was equivalent). This rank was renamed warrant officer, and then warrant officer class 1. In 2004 the rank of warrant officer class 2 was formed from those CPOs holding the appointment of charge chief petty officer. The insignia is a crown within a wreath, also worn on the lower arm. The badges are now worn on the shoulders