In the second half of World War II, it is the Cromwell marching tanks that became the pillar of the British armored unit along with the Churchill infantry tank. Equipped with a Christie type suspension, large diameter wheels and a 600hp M meetia engine, it demonstrated a high speed of 65 km/h. Among them, the Mk.IV was equipped with a powerful 75 mm cannon instead of the previous 6 pounds as the main weapon. He first entered the war during the Normandy landing in June 1944 and used his high speed to contribute significantly to the Allied victory.