'A Modern Major General': the memoirs of Julian Gascoigne 1903-1990, including descriptions of training at Sandhurst and early military career with the Grenadier Guards, 1921-1927; life as ADC to Sir Stanley Jackson, Governor of Bengal, 1927-1928; companion to the sons of the Nizam of Hyderabad during their visit to London, 1931; various staff officer postings in and around London, 1939-1941; commander, 201 Guards Brigade, Egypt and Syria, including assisting General Oliver Leese in the Battle of Alamein and fighting with 8 Army in Tunis, North Africa; the invasion of Salerno, Italy, Sept 1943, and subsequent battles, including his serious lung injury at Monte Camino, subsequent hospitalisation in the UK and posting to Staff College, Camberley, 1944-1945; life as Deputy Commander of the British Army Staff at Washington, 1947-1949; work as General Officer in Command, London District, and Major General commanding the Household Brigade, including the funeral of King George VI and coronation of Queen Elizabeth the Second; experiences as Governor of Bermuda, 1959-1964.

Papers relating to his military career, 1914-1945, dated 1914, 1917-1918, [1945]-1978, principally comprising typescript texts of lectures, [1965-1975], on his service with the Australian Military Forces, 1937-1939, the planning and execution of Allied invasion of North Africa, 1942, and his service with the SOE, North West Europe, 1943-1945; correspondence with Sir ArthurWynne Morgan Bryant, 1978, concerning Mockler-Ferryman's service with Maj Gen John Greer Dill, Commandant, Staff College, Camberley, 1933, and Gen Sir Alan Francis Brooke (later FM Alan Francis Brooke, 1st Viscount Alanbrooke of Brookeborough), Commander-in-Chief, Home Forces, 1940-1941.