Interesting about your grandfather MARNE, being involved in an operation like that.

As I mentioned, my way of thinking has come around to what that poster wrote, [I think he was Chinese] after what countries like his suffered, it's not surprising that they wanted the war over as soon as possible.

But the reason I always see for dropping the bombs is almost entirely built around the scenario of the U.S. not having to invade and suffer huge casualties, when as I posted the U.S. Strategic Bombing Survey reported that the Japanese were on the verge of surrendering and probably would have done so before Operation Olympic, the invasion of Kyushu, set to begin in November 1945.

So even if the bombs weren't dropped, [or didn't work] I don't think that the invasion would ever have to go ahead, and if the Japanese still held out by then, the blockade and fire bombing would soon bring them to their knees for minimal U.S. casualties, so why invade and suffer horrendous casualties?