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
Medical Assistant (Royal Navy) instance of a Commodore. The MSOs were also previously called ward masters. Medical Assistant (Royal Navy) The Medical Assistant. is a Royal Navy medical rating in the United Kingdom. Medical Assistants serve on all types of ships in the surface fleet, submarine fleet, Royal Marines, Fleet Air Arm or ashore in a sick bay, hospitals, or other establishment. The equivalent rate in the United States Navy (USN) is hospital corpsman. The Medical Assistant provides a broad spectrum of skills in primary care, occupational health, secondary care, pre-hospital trauma life support, medical administration, teaching first aid and disease prevention, providing health