Notes, memoranda and correspondence by and from Wing-Commander Charles Anderson [Commander No 1 Armament Training, Catfoss, Yorkshire], including: copy of Air Ministry Orders on short service commissions; notes on the strength of various squadrons; report by Air Commodore Hugh Champion de Crespigny, Air Officer Commanding No 25 (Armament) Group, on the armament training of No 144 (Bomber) Squadron, in bombing, gunnery and equipment; account of aircraft conditions for a bombing raid over Munich [Germany] (October 1939); reprint from International Affairs, of "Air Power" by Henry Wimperis.