Today's military has some jobs that might surprise you — for example, did you know the Army and Marine Corps have instrument repair technicians? These troops repair musical instruments for the military bands.
But during World War II, there were a lot of jobs that would seem strange in today's technologically focused military. Over the course of the war, technological advances reduced or eliminated the need for many manual occupations. This transition is captured in the War Department's list of military jobs from 1944, where entries like ''horse artillery driver'' appear just a page away from ''remote control turret repairman.''
Although they weren't used in World War II to the extent they were used in the First World War, troops still relied on horses and mules to cross terrain impassable to mechanized units. For example, the 5332nd Brigade, a long range patrol group created for service in the mountains of Burma, was largely self-sufficient due to the 3,000 mules assigned to it — all shipped from the United States.
The military's animation artists were quite busy during World War II. The Army even stationed soldiers at Walt Disney's studios for the duration of the war to make patriotic films for the public and instructional or training films for service members.
Personal radios were forbidden on the front lines, but crystal radio sets lacked external power sources, so they couldn't be detected by the enemy. For this reason, troops often improvised crystal radios from a variety of materials — including pencils and razor blades — in order to listen to music and news. These contraband radio sets were dubbed ''foxhole radios.''
Wood was used to package a wide range of goods for transport all the way through World War II, but improvements in metal and cardboard packaging technology marked the beginning of the end for wooden barrels and crates.
Operation Fortitude was aimed at convincing the Germans that Allied troops heading to France for the D-Day invasion would land in Pas de Calais in July, rather than Normandy in June. Dummy buildings, aircraft and landing craft were constructed by model makers and positioned near Dover, England, in a camp built for the fictitious First U.S. Army Group. The deception was so complete that Hitler held troops in reserve for two weeks after D-Day because he believed another invasion was coming via the Dover Strait.
From a forward operating post, a field artillery sound recorder would monitor an oscillograph and recorder connected to several microphones. When the sound of an enemy gun reached a microphone, the information would be recorded on sound film and the data from several microphones could be analyzed to locate the enemy gun. The technology is still in use today by many countries, which often use sound ranging in concert with radar.
Wooden gliders like the Waco CG-4A — the most widely used American troop/cargo military glider of World War II — played critical parts in the war. The CG-4A was first used in the invasion of Sicily in July 1943. They most commonly flew airborne troops into battle, most famously for the D-Day assault on France on June 6, 1944, and Operation Market Garden in September 1944. They were also used in the China-Burma-India Theater.