The Second World War is the cruelest war in human history in which all segments of the state economy were involved in order to achieve victory. During World War II, Germany and the USA were looking for a way to increase their war production that would give them the upper hand in the war. The transformation of the auto industry was an ideal solution for both sides in the form of increasing war production capacity. By the beginning of the Second World War, the automotive industry had already become a modern industry with a large share in the economy of the USA and Germany. During the Second World War, the potential of the auto industry was used in the creation of war weapons. Automobile companies stopped the production of civilian products and devoted themselves to the production and development of war weapons. The production and use of combat aircraft, tanks and other combat equipment was important for achieving victory in the Second World War. The German and American armed forces used the manufacturing facilities of their major automobile companies to increase production of much-needed combat aircraft and tanks. The transformation of the auto industry required large financial investments for the adaptation of existing facilities for the production of aircraft and tanks and the construction of new ones. Also, the state had to provide much-needed raw materials such as steel, aluminum, oil and rubber for production. The transformation of the civilian automobile industry into a war industry could not have taken place without the decisions of leading politicians and the cooperation of large automobile corporations with the state authorities. The approach to the transformation of the auto industry and its importance in the production of aircraft and tanks differed between the Germans and the Americans depending on the situation in which Germany and the USA found themselves. The transformation of the auto industry and the increased production of war goods caused a labor shortage and a search for new workers in the USA and Germany.