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 Australian Navy in the Asia Pacific Region. In the years following the establishment of the British colony of New South Wales in 1788, Royal Navy ships of the East Indies Squadron under the command of the East Indies Station would be station in or visit Australian waters. From the 1820s, a ship was sent annually to New South Wales, and occasionally to New Zealand. In 1848, an Australian Division of the East Indies Station was established, and in 1859 the British Admiralty established an independent command, the Australia Station, under the command of a Commodore who was assigned as Commander-in-Chief, Australia Station.