In the spring of 1944, the United States Army assembled a unit unlike any other in the history of warfare. Eleven hundred men — painters, illustrators, designers, architects, sound engineers, and radio operators recruited from art schools, advertising agencies, and theater companies — were given inflatable tanks, a collection of sound effects records, and one mission: make the Germans believe they were somewhere they weren't.

The 23rd Headquarters Special Troops. The Ghost Army.

They carried out twenty-one deception operations in ten months across France, Luxembourg, and Germany. They impersonated entire divisions. They broadcast the sounds of massed tank columns through speakers mounted on half-tracks. They painted fake unit insignia on real vehicles and staged them where German reconnaissance aircraft would photograph them. They sav ...