infantry, equipped with large numbers of antitank-guns, with the potential to completely halt tank assaults inflicting devastating losses to armoured units without infantry support. However, much of the AFV production was increasingly diverted away from the Panzertruppe. The Artillery formed its own Sturmgeschütz units and infantry divisions were given their own Panzerjäger companies. Despite lowering their formal organic strength, from the summer of 1943 onwards, the armoured divisions were structurally short of tanks. United States Though the U.S. had established the Tank Corps in World War I using French Renault FT light tanks and British Mark V and Mark V* heavy tanks, and some officers like Dwight D. Eisenhower and George S. Patton, Jr. emerged from that war initially as avid proponents of continuing and developing an American armoured force, the rapid reduction of the forces and apathy and even antipathy towards funding and maintaining armed forces in the inter-war years led to relative stagnation of armoured doctrine in the United States. Adna R. Chaffee, Jr., virtually alone, advocated for the future of armoured warfare and the development of appropriate training, equipment and doctrine during the late 1920s through the 1930s. The United States Army regarded the French Army as the best army in Europe, and consequently the U.S. Army frequently copied French uniforms (the American Civil War) and aeroplanes. Only when France was rapidly overrun in 1940 did the U.S. Army become "shocked" into re-thinking the influences by the perceived actions of German tanks in the 1939 Polish Campaign. Its Armored Combat Arm was not created until 1940 when the Armored Force was born on 10 July 1940, with the Headquarters, Armor Force and the Headquarters, I Armored Corps established at Fort Knox. On July 15, 1940, the 7th Cavalry Brigade (Mechanised) became the 1st Armored Division; the 7th Provisional Tank Brigade, an infantry tank unit at Fort Benning, became the 2nd Armored Division". The Tank Battalion was established at Fort Meade, Md., and a small Armored Force School was also established. Under this doctrine, U.S. tank crews of both armoured divisions and GHQ tank battalions were taught to fight tanks in tank on tank engagements. Armoured force personnel during and after the war criticised the infantry for using the GHQ tank battalions assigned to infantry divisions strictly as infantry support. Tank destroyers The U.S. combined arms team included air support, artillery, engineers, and a tank component supplemented by