I didn't say the military didn't see the utility of the atomic bomb, I said the military saw no military utility in hiroshima and nagasaki. There is a difference between using the bomb to kill soldiers and to destroy/irradiate and kill civilians. Just like there is a a military utility of the gun to kill enemy soldiers, but no military utility to shooting children.
For example, a concentration camp to keep enemy soldiers is far different than a concentration camp to keep jewish, japanese american, etc civilians ( fathers, mothers and children ).
And it's odd that you bring up macarthur since we know for a fact that he was against hiroshima and nagasaki.
"When I asked General MacArthur about the decision to drop the bomb, I was surprised to learn he had not even been consulted. What, I asked, would his advice have been? He replied that he saw no military justification for the dropping of the bomb. The war might have ended weeks earlier, he said, if the United States had agreed, as it later did anyway, to the retention of the institution of the emperor."
https://www.huffingtonpost.com/greg-mitchell/countdown-to-hi...