In 1940 Gordon Mellor was called up and joined the RAF, training in the UK and Canada as a navigator. Gordon's war years, serving with Bomber Command, were particularly dramatic and he left the service in 1946 as Flight Lieutenant. He passed his final Royal Institute of Chartered Surveyors exams, and worked in the Parks and Recreation department of the London County Council. In 1943 Gordon had married Daphne, and the birth of two children in 1947 and 1950 completed the family. In 1968 they all moved to North Wembley, London, where Gordon still lives. Membership of a number of associations enabled Gordon to keep up with old friends, especially those associated with the Comète escape line. Gordon was also a Trustee of the Executive Committee of the Bomber Command Association during planning and construction of the Bomber Command Memorial in London's The Green Park.