Development of the tractor started in 1935. In 1937 a development type raced to Moscow and back, being demonstrated in the Kremlin. The machine produced strong impression and was approved. The tractor demonstrated high results: it has towed the largest artillery systems and all types of tanks, including the T-35, very well. Late in 1939 the manufacturing of the "Voroshilovets" started. 1123 vehicles were built. During the war the tractor was efficiently used at all fronts for heavy transport works.