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.
Admiral of the Fleet (Royal Navy)
The origins of the rank can be traced back to Sir John de Beauchamp, 1st Baron Beauchamp de Warwick, who was appointed 'Admiral of the King's Southern, Northern and Western Fleets' on 18 July 1360. The appointment gave the command of the English navy to one person for the first time; the post evolved into the post of Admiral of the Fleet. In the days sailing ships the admiral distinctions then used by the Royal Navy when the fleet was divided into three divisions – red, white, or blue. Each division was assigned an admiral, who in turn commanded a vice-admiral and a rear admiral. In the 18th century, the original nine ranks began to be filled by more than one person at any one time. The admiral of the red was pre-eminent and became known as the admiral of the fleet.