¹ The USSR was allied with Germany 1939–40. ² No reliable data exist for Japan. FIGURE 25.1 Global Comparison: Weapons Production by the Axis and Allied Powers During World War II U.S. weapons dominated the air and the sea during World War II. Together, the three Allied powers produced about three times as many aircraft and five to eight times as many warships as the two Axis powers. The Soviet Union led the other Allies in the production of tanks and artillery. What does the chronology of weapons production suggest about the kind of warfare emphasized by each belligerent nation and the course of the war?