A fascinating account of the ingenious techniques used to train each crewmember on Blenheims from the July 11, 1941 edition of The Aeroplane
At the height of World War Two with victory still four years away The Aeroplane was shown in surprising detail how RAF Blenheim bomber crews were being trained. Although the aircraft simulators and computerised training aids we take for granted now were a long way in the future, the RAF nevertheless found creative training techniques with the technology of the day to help prepare crews for combat operations.

Overview of article
Training Bomber Pilots