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
History of the Royal Air Force the RAF is the world's oldest independent air force: that is, the first air force to become independent of army or navy control. The RAF was founded on 1 April 1918 by the amalgamation of the Royal Flying Corps and the Royal Naval Air Service and was controlled by the British Government Air Ministry which had been established three months earlier. The Royal Flying Corps had been born out of the Air Battalion of the Royal Engineers and was under the control of the British Army. The Royal Naval Air Service was its naval equivalent and was controlled by the