While working at the Royal Observatory, Greenwich, World War II broke out and it wasn't long before he was loaned out for war work in 1940 and by the end of the war he had risen to the position of Director Operational Research at the Admiralty.
While working at the Royal Observatory, Greenwich, World War II broke out and it wasn't long before he was loaned out for war work in 1940 as Chief Scientist in the Degaussing Department (mine design department), in charge of 50 men. By the end of the war he had risen to the position of Director Operational Research at the Admiralty.