The Assistant Chief of the Naval Staff (A.C.N.S.) is a senior appointment in the Royal Navy usually a two-star rank and has a NATO ranking code of OF-7.
The Admiralty War Staff was the former senior naval staff operational planning organisation within the British Admiralty that existed from 1912 to 1917. It was instituted on 8 January 1912 by Winston Churchill in his capacity as First Lord of the Admiralty and was in effect a war council whose head reported directly to the First Sea Lord. After the First World War ended, the War Staff was replaced by the Admiralty Naval Staff department.
The Admiralty Naval Staff was the former senior command, operational planning, policy and strategy department within the British Admiralty. It was established in 1917 and existed until 1964 when the department of the Admiralty was abolished. It was replaced by the Ministry of Defence as part of the Ministry of Defence Navy Department.
The Anti-Submarine Division its original name, was the former anti-submarine warfare, planning and prevention Directorate of the Admiralty Department from 1912-1963.
The Plans Division was the former war preparation and wartime strategic planning arm of the Admiralty Department from 1917 to 1964, The division originally became the main policy advisory and formulating body to the Chief of the Naval Staff. It later came under the supervision of the Assistant-Chief of the Naval staff (Policy).
The Naval Intelligence Department (NID) was the intelligence arm of the British Admiralty from 1887 until 1912 when most of its subsidiary divisions were absorbed during the creation of the Admiralty War Staff department that included a new Naval Intelligence Division that concentrated in that sphere solely. It dealt with intelligence matters concerning British naval plans, and with the collection of naval intelligence in regard to coastal defences, foreign powers, mobilisation, trade and war.
The Naval Mobilisation Department also known as the Mobilisation and Movements Department was a former department of the British Admiralty initially from 1909 to 1912 and then again from 1918 to 1932. It was mainly responsible for plans, mobilisation and manning during the pre-World War I and post war period.
The Mobilisation Division was the former Directorate of the British Admiralty Naval Staff responsible for mobilisation requirements, manning and war preparation planning from 1912–1918.
The Gunnery and Torpedo Division was the former Directorate of the Admiralty Naval Staff responsible for weapons policy making, development and assessing weapon requirements from 1918-1920.
The Department of the Permanent Secretary also formally known as the Department of the Permanent Secretary to the Admiralty or the Department of the Secretary was the Civil Service department responsible for the control, direction and guidance of all administrative functions of the British Admiralty from 1702 to 1964, it was headed by the Permanent Secretary to the Admiralty.
The Air Division originally known as the Air Section and later known as the Naval Air Division was first established in 1924 and it was a Directorate of the Admiralty Naval Staff, that was initially responsible for operational control of aircraft supplied to the Royal Navy by the Air Ministry. In 1939 it was gained full control for the all matters relating to administration, control, policy and organisation of the Fleet Air Arm, it underwent various name changes until it was absorbed as part of the merger of the Admiralty into the new Ministry of Defence in April 1964 as part of the Navy Department where it continued until May 1966 when its remit was changed and when became the Directorate of Naval Warfare.
The Signal Division was a Directorate of the Admiralty Naval Staff responsible for policy, control and management of all naval communications from 1914 to 1964.
The Naval Ordnance Department, also known as the Department of the Director of Naval Ordnance, was a former department of the Admiralty responsible for the procurement of naval ordnance of the Royal Navy. The department was managed by a Director, supported by various assistants and deputies; it existed from 1891 to 1958.
The Department of the Director of Naval Equipment also known as the Directorate of Naval Equipment was the former British Admiralty department responsible for managing the progress of all naval construction at royal naval dockyards, and annually planning programmes of works for additions, alterations, repairs and modernisation established in 1912 until 1960 when it was replaced by the Naval Equipment Division of the Ship Department.
The Trade Division was a Directorate of the British Admiralty, Naval Staff responsible for all matters in relation to U.K. Trade Defence from 1914 until 1928 and then again from 1939 to 1961.
The Gunnery Division was a Directorate of the Admiralty Naval Staff of the Royal Navy responsible for the tactical use of naval weapons and the training of naval personnel in relation to operational requirements. It was established in 1920 when the Gunnery and Torpedo Division was separated into an independent Gunnery Division and Torpedo Division. It existed until 1964 when the Department of Admiralty was abolished and replaced by a new Ministry of Defence.
The Training and Staff Duties Division and later known as the Tactical and Staff Duties Division was a directorate of the Admiralty Naval Staff of the Royal Navy responsible for the tactical use of naval weapons and the training of naval personnel in relation to operational requirements from 1917 to 1958.
The Admiral Commanding, Reserves, was a senior Royal Navy post that existed from 1875 to 1976.
British Naval Forces Germany was a command of the Royal Navy that was active from 1944 to 1961 under three titles.
The Department of the Director of Underwater Weapons Materials originally known as the Torpedo Department was a former department of the British Department of Admiralty from 1917 to 1958 when it became the Underwater Weapons Division of the Weapons Department.
