'The Army That Never Was' tells the remarkable story of the deceptions, hoaxes and misdirections carried out by the Allies ahead of the most pivotal moment of the Second World War - the D-Day invasion. The most audacious of these schemes aimed to convince German forces that plans to storm Normandy were a mere sideshow, and featured a fictitious army led by General Patton and furnished with hundreds of real-world dummy landing craft, tanks and aircraft. New research reveals a hidden link with Britain's film industry, as the fascinating behind-the-scenes story of this dramatic gambit is explored in detail.