Dummy tanks saw significantly more use during World War II. Military deception is as old as war itself, but the idea the Allied planners came up with represented something new: a mobile, self-contained deception unit capable of staging multimedia illusions on demand. The 1,100 men in the unit were capable of simulating two full divisions—up to 30,000 men—with all the tanks and artillery that the real units might be expected to have. The illusion might discourage the enemy from exploiting a weak spot by making the site seem as if it was heavily defended, or could draw enemy troops away from where real American units were planning an attack.
Formed in January of 1944, and sent into action after D-Day, the Ghost Army went to war armed with three types of deception to fool the enemy: visual, sonic and radio. Visual deception was handled by the 603rd Camouflage Engineering Battalion. Originally formed to carry out large-scale camouflage, it was loaded with young artists, architects and designers who now turned their visual talents to a different kind of art.
To this purpose, they were equipped with hundreds of inflatable tanks, cannons, trucks, and even aeroplanes that could be used to create dummy tank formations, motor pools, and artillery batteries that looked like the real thing from the air. These decoys were not simply giant balloons, but consisted of a skeleton of inflatable tubes covered with rubberised canvas, an ingenious design which ensured that a single piece of shrapnel could not instantly deflate the entire dummy.
Dummy tanks were used in Operation Fortitude prior to the landings at the Normandy Beaches. During this operation, they were used to confuse German intelligence in two ways: first, by making it seem that the Allies had more tanks than they did; and second, to hide and downplay the importance of the location of their real tanks in order to make it seem that the invasion would occur at the Pas-de-Calais rather than at Normandy. However, dummy vehicles played only a small part of the overall deception plan as, at that stage of the war, the Germans were unable to fly reconnaissance planes over England and such effort would have been wasted.
During Operation Shingle at Anzio, Italy, inflatable Sherman tanks were deployed when the real tanks were elsewhere. In the Pacific Theater, the Japanese made use of dummy tanks, crafting them out of wood and available materials, even sculpting one out of Iwo Jima’s volcanic sands.
(Photo credit: US National Archives / Bundesarchiv / Getty Images).