Why did the United States bomb Hiroshima and Nagasaki in Japan?

According to the original plan, not only Hiroshima and Nagasaki, but also Kokura, Fukuoka, Osaka and Kyoto were to be attacked by nuclear weapons. Nagasaki was originally ranked behind Kokura, but it was changed to Nagasaki because of the weather during the bombing.

It is meaningful to choose the target of nuclear strike. Besides dealing a heavy blow to Japan's morale and resistance, the choice of strategy and tactics is very important.

Among these six goals, Hiroshima is known as the "Japanese Capital". It was once the headquarters of the Second General Army of Japan (equivalent to the army) and the headquarters of the China Military Control Zone (referring to the Kansai region of Japan). Most of the main forces of the Japanese army come from here, and generations of Japanese soldiers set out from here. After the Sino-Japanese War, the Russo-Japanese War annexed Northeast China, Lugouqiao, Harbin Fangping 73 1 Army, Nanjing, Wuhan, Panjiayu, Pingdingshan and bridge on the river kwai ... It can be said that this city is a symbol of the Japanese army. Destroying it will basically paralyze the army command centers in Kansai and Kyushu, paving the way for the "Olympic plan" for the US military to land in Kyushu.

Kokura is the military industrial center of Kitakyushu and the location of the largest arsenal. If this place is destroyed, the Japanese army will fall into a situation without guns and bullets, and it will be much easier for the US troops to land in Kyushu.

Nagasaki, the most important shipbuilding center in Japan, is built here not only for naval warships, but also for most civilian ships. Destroying this place will seriously hit the shipping capacity of the island country of Japan.

Fukuoka is the economic and political center of Kitakyushu, which is mainly responsible for the contact with the Asian continent. Destroying this place can minimize the possibility of recent support from North Korea and Manchuria and further pave the way for the Kyushu landing plan.

The importance of Osaka and Kyoto to Japan is self-evident, but it is expected that the target will be ranked behind the first four cities. Generally speaking, it is necessary to fight against the will of resistance and destroy this ancient city with a long history, which can destroy the cultural symbols of a nation. Military significance is not very important.

Due to the Japanese surrender, the atomic bombs planned for nuclear attack included Fat Man, Little Boy, Gilda and Helen, and only two of them were used. The latter two were later used in the nuclear test of Bikini Island. If the Japanese don't surrender, Gilda and Helen will explode over Fukuoka, Kokura, Osaka and Kyoto. It can be seen that the six selected targets are all cities in Kansai and Kyushu regions of Japan, which shows that in the "descent" plan to occupy Japan, these six targets are aimed at the first stage of the "Olympic Plan", that is, landing in southern Kyushu, and the second stage of the "Crown Plan", that is, landing in Honshu, may also include Kanto cities as targets, but as we all know, Japan has not implemented the first stage.