When the United States attacked Germany, Japan was also responsible. At the beginning of the war, the United States and Germany were not in a state of war or declared war on each other. The reason is that Japan first attacked Pearl Harbor in the United States, and declared war on the United States, while Japan's allies Germany and Italy were forced to declare war on the United States. According to Hitler's strategy at that time, they did not advocate declaring war on the United States, but the Japanese militarists were short-sighted and carried away by the victory of the war of aggression against China. Has reached the point of getting carried away. After Nomenkan failed to attack the Soviet Union, he betrayed his faith, refused to attack the Soviet Union with Germany and went to war with the United States alone, thus forcing Hitler to declare war on the United States. After the Allies declared war on the Allies, the United States sent a large number of weapons and war materials to the Allies. Hitler launched submarine warfare and attacked American transport ships and escort fleets with wave tactics. In order to contain Germany's expansion ambition, the United States was forced to fight on two fronts, one was Japan and the other was Germany. The American war machine has been fully started, and its powerful production capacity has been fully reflected. The stronger the Vietnam War, the more it invaded Germany in just four years, clearing the islands around Japan and forcing it.

Before the start of World War II, Japan also wanted to attack the Soviet Union, but there were two factions in Japan: the North and the South. In the end, the southward faction took the lead, and the battle of Nomenkan was frustrated. It was forced to sign a non-aggression treaty with the Soviet Union and concentrate on fighting with the United States. Once it goes to war with the United States, Japan cannot divide its forces and attack the Soviet Union. The Soviet Union took the initiative to attack Japan because World War II was coming to an end and Japan was about to surrender. At this time, ideological problems began to appear. The Soviet Union sent troops to the northeast of China for the benefit of the Far East, which fully demonstrated the ambition of the new czar to carve up the world. Not to help the Japanese people in the war of resistance. At that time, when the Soviet Union attacked the northeast of China, its slogan was: Revenge for the Russians who died in the Sino-Russian War in 1904. After the war, all the machinery, equipment and useful materials in the factories during the Japanese puppet regime were shipped back to the Soviet Union, which made the life of the Japanese people worse and worse.