Lineage (excerpt)
Authorized as '4 (Operations) Squadron' 1 April 1925.
Redesignated 'No.4 Squadron (Training)' 1 April 1927. Disbanded 1 July 1927.
Redesignated 'No.4 (Flying Boat) Squadron' 1 November 1935.
Redesignated 'No.4 (General Reconnaissance) Squadron' 1 December 1937.
Redesignated 'No.4 (Bomber Reconnaissance) Squadron' 1 September 1939. Disbanded 7 August 1945.
Operational history
The Second World War
The squadron flew on anti-submarine operations on the Pacific Coast under 'Western Air Command'.
Government of Canada, The Insignia and Lineages of the Canadian Forces, Volume 4: Operational Flying Squadrons (A-AD-267-000/AF-004)
