Commodore (Royal Navy) Commodore (Royal Navy) Commodore (Cdre) is a rank of the Royal Navy above captain and below rear admiral. It has a NATO ranking code of OF-6. The rank is equivalent to brigadier in the British Army and Royal Marines and to air commodore in the Royal Air Force. The rank of commodore was introduced during the 17th century in November 1674 (though not legally established until 1806). In 1684 the navy introduced two classes of commodore, the first known as a "Commodore Distinction" and the other a "Commodore Ordinary"; these would later evolve into commodores first and second class. In
Structure of the British Army Structure of the British Army The structure of the British Army is broadly similar to that of the Royal Navy and Royal Air Force, in that the four-star (general-equivalent) field commands have been eliminated. Army Headquarters is located in Andover, Hampshire. As the top-level budget holder, this organisation is responsible for providing forces at operational readiness for employment by the Permanent Joint Headquarters. There is a Commander Field Army and a personnel and UK operations command, Home Command. The command structure is hierarchical with divisions and brigades controlling groupings of units from an administrative perspective. Major Units are regiment or