Air commodore is never shortened to Commodore, which is a rank in various naval forces. Air commodore is a one-star rank and the most junior air officer rank, being immediately senior to group captain and immediately subordinate to air vice-marshal. It has a NATO ranking code of OF-6 and is equivalent to a commodore in the Royal Navy or a brigadier in the British Army or the Royal Marines. Unlike these two ranks, however, it has always been a substantive rank. Additionally, air commodores have always been considered to be air officers whilst Royal Navy commodores have not since the Napoleonic Wars
Trawlers of the Royal Navy Trawlers of the Royal Navy This is an accounting of the naval trawlers, purpose built or requisitioned, operated by the Royal Navy mainly during World War I and World War II. Vessels purpose built to Admiralty specifications for RN use were known as Admiralty trawlers. All trawlers operated by RN, regardless of origin, were typically given the prefix HMT, which stood for "His Majesty's Trawler". There were also 215 trawlers of no specific class These were commercial trawlers taken over by the Admiralty. The Royal Navy classified requisitioned trawlers by manufacturer, although such classes were more diverse than traditional naval