Upon his induction into the Army, Leland Carr scored well on a test which qualified him for special Signal Corps training. He spent over a year at Camp Crowder, Missouri where he learned to operate a teletype machine and was trained to send secret coded messages. Eventually promoted to the rand of Sergeant, Leland was sent to the United Kingdom in March, 1944 on the Queen Mary which had been converted from a luxury liner into a troop transport which could carry as many as 16,000 personnel. After arriving in Scotland, he traveled south to London where he was assigned to the Supreme Headquarters, Allied Expeditionary Force. For some time Leland worked in the sub-basement of Selfridge's Department store sending top secret messages, and he narrowly avoided death or serious injury when a V-2 missile hit nearby on 6 December 1944, killing several of his friends who were waiting for him upstairs. Sergeant Carr returned to Texas in December of 1945 where he raised a family.