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 Navy History of the Royal Navy The official history of the Royal Navy began with the formal establishment of the Royal Navy as the national naval force of the Kingdom of England in 1660, following the Restoration of King Charles II to the throne. However, for more than a thousand years before that there had been English naval forces varying in type and organization. In 1707 it became the naval force of the Kingdom of Great Britain after the Union between England and Scotland which merged the English navy with the much smaller Royal Scots Navy, although the two had begun