In fact, the main force of the Japanese army at that time was basically still there, before the Soviets sent troops to the northeast, the Kwantung Army of the Japanese Kwantung Army at that time had 31 infantry divisions, 11 infantry and tank brigades, 1 death squad brigade and 2 aviation troops, as well as puppet Manchukuo troops, etc., a total of about 1.2 million people. However, in the later period, the Japanese Kwantung Army was seriously reduced to 600,000, and the Japanese army in various parts of China was almost 1 million, and the strength of his native army was also more than 2.6 million, so the Japanese felt that there was still a possibility of letting go.
At that time, the Japanese felt that they were just the total annihilation of the navy, their own powerful army, the main force was still there, if they surrendered hastily, it was not in the fundamental interests of Japan at all, this was one, and the second was that the Japanese felt that if they surrendered, then the results of their 14 years of fighting would also be in vain, and all the sacrifices made by Japan before this would be unacceptable to the Japanese. The three Japanese felt that as long as they could seriously damage the American army in a decisive battle on the mainland and let them withdraw, it would be very beneficial for Japan to win more interests in the armistice negotiations. But what the Japanese could not predict was the Soviet Union's troops, and the American atomic bomb.
Unbeknownst to Japan at the time, the United States had developed an atomic bomb ahead of schedule. Originally, the United States wanted to take action against Germany, but the Germans surrendered in advance, and at that time, the news that the Americans had developed the atomic bomb was known only to US President Roosevelt and several important government personnel, and even Truman, who went to take over as president after Roosevelt's death, did not know that there was an atomic bomb, until the third day of Truman's presidency when negotiations with the Japanese reached a stalemate, then someone told Truman the news of the success of the atomic bomb development. This gave Truman at that time a sudden confidence, and successive deadlines were set for the Japanese.
The Japanese side simply ignored Truman's warning that there was a super bomb, and threatened that if the Americans dared to attack the Japanese mainland, they would be resolutely counterattacked by 100 million Japanese soldiers and civilians. At this time, on August 9, 1945, the Soviet Union suddenly sent troops to the three eastern provinces, and in just 17 days, the IWN Japanese Kwantung Army was completely collapsed to the point of total annihilation, 83,000 Japanese were killed, 590,000 Japanese Kwantung Army was captured by Soviet troops, and the whole of Korea was liberated.
Before August 6, 1945, the U.S. military issued a large number of leaflets in major cities in Japan, issuing warnings to inform the Japanese people that a huge bomb would be dropped in these days, and the Japanese people evacuated to a safe place or took refuge in an air raid shelter. At that time, the U.S. government also informed the Japanese civilians in advance that they were also benevolent and righteous. On August 6 and August 9, the Americans dropped two atomic bombs on Nagasaki and Hiroshima, respectively. Thus announcing the demise of The Empire of Japan. In fact, the Japanese could have avoided this disaster, but due to the decay and arrogance of the Japanese top brass, the tragedies in Nagasaki and Hiroshima eventually occurred. Everything is due to Japan's self-righteous undertones.