Henning Pedersen volunteers for the Royal Air Force during the Second World War, but wins distinction in No. 489 (RNZAF) Squadron and No. 279 Squadron.
Paul Andersen enlisted in the RCAF in late 1942 and served as an air gunner in 44 (Rhodesia) Squadron in 1944. Andersen and his crew was killed in action returning from a minelaying operation over Danish waters in 15/16 July 1944.
A large number of especially young Danish born men entered air service via the United States. Many of these were sailors having left Denmark before the German occupation. Most of these men volunteered for the Norwegian forces training in Camp Little Norway in Canada, but some enlisted in the USAAF.
Shortly after D-Day, the first V1 flying bombs hit London. Three Danish fighter pilots were involved in the fighter defence against the flying bombs in the summer of 1944.