The RAF Millom Aviation & Military Museum was a museum of the British Royal Air Force bombing and gunnery school, located in Millom, Cumbria.Opened in January 1941 as No.2 bombing and gunnery school and in summer became No. 2 air observer School. In 1942 it became No. 2 Observer Advanced Flying Unit until 1945 and in 1946 it was put under care and maintenance until 1953 when it was reopened for a 12-month period as No.1 Officer Cadet Training Unit. No. 1 O.C.T.U.