The papers consist of a memorandum on the war in the Aegean, 1916 to 1917, detailed minutes compiled while he held office as Deputy Chief of Naval Staff and other papers relating to this post. There are also collected essays and articles written by Fremantle, 1904 to 1919.

Administrative / biographical background
Eldest son of Admiral Sir Edmund Robert Fremantle (q.v.), Sydney Fremantle entered the Navy in 1881. He was promoted to lieutenant in 1887, to commander in 1889 and to captain in 1903 After a distinguished career afloat he was made Head of the War Division at the Admiralty in 1910 and President of the Signal Committee at Portsmouth in 1912. He became a rear-admiral in 1913 and was made Head of the Signals Division at the Admiralty in 1914. He was second-in-command of the Third Battle Squadron in 1915, and was appointed to command the Ninth Cruiser Squadron in 1916 and the Second Cruiser Squadron in early 1917. In August of that year he was in command of the British Aegean Squadron. In January 1918 he was made Deputy Chief of Naval Staff, was promoted to vice-admiral and in May 1919 was appointed to command the First Battle Squadron. Fremantle was promoted to admiral in 1922 and was Commander-in-Chief, Portsmouth, from 1923 to 1926. Ho retired in 1928. See Fremantle's autobiography, 'My Naval Career' (London, 1949).