Air War: A British Lancaster bomber is silhouetted against flares and explosions during the attack on Hamburg, Germany, on the night of January 30, 1943. (Credit: Imperial War Museum)

I began work in the Operational Research Section (ORS) of the British Royal Air Force's Bomber Command on July 25, 1943. I was 19 years old, fresh from an abbreviated two years as a student at the University of Cambridge. The headquarters of Bomber Command was a substantial set of red brick buildings, hidden in the middle of a forest on top of a hill in the English county of Buckinghamshire. The main buildings had been built before the War. The ORS was added in 1941 and was housed in a collection of trailers at the back. Trees were growing right up to our windows, so we had little daylight even in summer. The Germans must have known where we were, but their planes never came to disturb us.

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