stock here: this is a massive story, never told anywhere in our history books. In fact, our schools taught us so poorly, that it took decades for me to understand that WW2 was not one big war, but 2 separate wars, and even that may be understating reality.
Did the nuclear bombs end the war with Japan? Perhaps, but just prior to that, Russia had wiped out 1M Japanese soldiers, killing them at a 30 to 1 ratio, in a mind numbing 11 day blitz. Check it out.