My great-uncle, after combat all across the Pacific, including New Guinea, Philippines, and Okinawa, was going to be in the first wave to hit Japan.
He said they told him his unit would take “at least” 95% casualties ... probably just because you’re probably going to have one fluke survivor somehow, if the unit’s big enough.
My parents and relatives from that generation always credited President Truman with making the difficult and necessary decision to drop the bomb. As a result, many GI lives were saved.
Ok, Truman was a Democrat. But unlike the pseudo Democrat (communist) in the White House today, Truman could make the hard decisions without worrying about what do-gooders and other whiners think.