How the Axis could have won World War 2. The attack on Pearl Harbor does not happen, although the United States would probably still join the Allies. Instead, Japan teams up with Germany and they both invade the Soviet Union. However, I don't think the Soviet Union would surrender, but if the Axis use chemical and biological weapons, I think the Soviet Union might surrender. The United Kingdom would probably not surrender unless the Axis used chemical and biological weapons on them. The United States would be alone to fight the Axis, but it could not win. The Axis could try to invade the United States, but I don't know who would win, but if the Axis used chemical and biological weapons, they would definitely win.