The US Army Liberty trucks produced at the end of the First World War were the first attempt in the world to create a standardized range of military vehicles, serially produced by several firms from standardized units. The most famous were cars of category B (series 1) with a capacity of 3 tons, which from the beginning of 1918 produced 15 American companies. They were hood trucks with an open cab equipped with a 4-cylinder engine, a cardan drive of the rear axle with a worm gear and cast tires. Before the end of the war, 9,452 Liberty trucks were assembled, of which 7,600 were sent to Europe.