His son Christopher served in the Royal Air Force in the early 1940s. It also seems unlikely JRRT would overlook the importance of air power as the Luftwaffe bombed the British Isles while he worked on the books during the war.
JRRT, in fact, loathed airplanes and forbade his son from flying in one. Numerous quotations on the horrors of modern technology (airplanes foremost among them) can be found in his letters to Christopher.
