Admiralty
It evolved from *Admiralty Navy War Council, (1909–1912) which in turn became the Admiralty War Staff, (1912–1917) before finally becoming the Admiralty Naval Staff in 1917. It 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, and the staff departments function continued within the Navy Department of the Ministry of Defence until 1971 when its functions became part of the new Naval Staff, Navy Department of the Ministry of Defence.
Board of Admiralty
With the exception of the years 1702 to 1709 and 1827 to 1828, when an individual Lord High Admiral was appointed who convened a Lord High Admirals Council to manage naval affairs, this remained the case (although the number of Commissioners varied) until the Admiralty became part of the Ministry of Defence in 1964.