Air officer and general officer in the Royal Navy and Army respectively. Specifically while the Army uses General Officer Commanding (GOC), the Air Force uses Air Officer Commanding (AOC) to designate the senior officer in a formation. Note, however, that in the British Armed Forces, while an air commodore is an air officer, his Royal Navy equivalent (commodore) is not considered a flag officer, nor is his British Army or Royal Marines equivalent (brigadier) considered a general officer. In 1919 when the RAF introduced its own air officer ranks, the preceding RAF and equivalent army rank was brigadier-general, which was a general
History of the Royal Australian Navy s, all to be built in America; in 1980 they announced an additional two vessels both to be built in Australia. The fifteen Australian-built vessels of the made up Australia's patrol boat from 1979 to 2007; they have now been replaced by the fourteen s. The is the newest class of Australian submarines, built in Australia for the Royal Australian Navy. They were constructed by the Australian Submarine Corporation in Adelaide, South Australia, and replace the six s in the Australian fleet. The first vessel, , was laid down in 1990 and commissioned in 1996, with all six vessels of