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
Future of the Royal Navy although many programmes were reduced in scale. This has led to the replacement of smaller and more numerous units with fewer, but larger, units. The main examples of this are the replacement of twelve Type 42 destroyers with six Type 45s and the replacement of the three 20,000 tonne s with two 70,600 tonne "Queen Elizabeth"-class aircraft carriers. There are, as of November 2018, 13 Royal Navy ships and submarines under construction (A further 5 planned): Four s (boats 4-7), one "Dreadnought"-class ballistic missile submarine (boat 1 of 4), one "Queen Elizabeth"-class aircraft carrier (ship 2 of 2), one Type