In high school, we were taught that the A-bombs dropped on Hiroshima and Nagasaki forced Japan to surrender. The bombs were the only way to break Japan’s fanatical resistance.
We were also taught that the Russians got in quickly at the end of the Pacific War, after the US had done all the heavy lifting. We were told their aim was to gain control over areas of the Far East, specifically Korea north of the 38th parallel.
The bit about the Russians went south in college. Even a cursory study of US foreign policy at the time made it obvious that Truman did everything in his power to bring the USSR into the war against Japan in 1945. However, until recently I’ve never had cause to question the “A-bombs won the war” thesis.
I’ve recently read a few things that have caused me to reconsider:
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The Japanese were able to reinforce Kyushu, the southernmost of their four home islands, with a much higher number of troops than the Americans had initially estimated. Kyushu was to be the scene for the initial US attack on Japan in late 1945.
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The Japanese had far more planes in the south of the country than the US knew about. Given the success of the kamikaze attacks off Okinawa, it’s likely the USN would have taken a hammering.
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Most interesting is the thesis that the Japanese surrendered largely because of the Soviet Union’s entry into the war. The argument is that Japan, having concentrated its resources in the south to deal with the American threat, had precious little left to defend Hokkaido, the northernmost of their four home islands. The Japanese chose to surrender rather than lose Hokkaido to the Russians.
Given the cynical way civilians were treated by the Japanese military on Saipan and Okinawa, it is reasonable to suppose the civilian casualties at Hiroshima and Nagasaki hardly raised an eyebrow in the corridors of power. However, the rulers of Japan may have cared big-time about losing Hokkaido.
Anybody read anything about this?