• Some squadron activities during the First World War are recorded in AIR1 at The National Archives but coverage is limited. Operations Record Books in AIR27 mostly from the mid-1930s, provide a daily record of events each squadron on Form 540. Some, mainly Second World War are available online - TNA.
  • IWM has a good collection of RFC/RAF material including squadron histories. However the number of such histories is relatively small compared with the total number of RAF squadrons that have existed.
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  • Action Stations (10 volumes by various authors and publishers) provides information on the operational history, squadrons and aircraft types based at each UK military airfield. Each volume covers a different geographical area with one overseas volume.
  • The Bomber Command War Diaries: An Operational Reference Book, 1939-45 by Martin Middlebrook and Chris Everitt (Barnsley, South Yorkshire: Pen and Sword, 2014) is a reference guide to Bomber Command's operations during the Second World War.
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