Absolutely true. Further, Truman had seen the horror of modern war - he had been to Europe in WWI as an infantry captain in an arty group. Artillery made WWI a most efficient and dehumanized killing ground - a soup of mud, water, blood and flesh.
Truman knew well what lay in store if we were going ashore on the main island.
Give a man who had seen what Harry had seen a choice between “Incredible new weapon dropped from high above the battlefield” and “street to street fighting for a year or more” and it isn’t a surprise which he chooses.
Harry’s best attribute was that he made a decision, stuck by it and didn’t try to pawn the responsibility for it off on someone else.
“Harrys best attribute was that he made a decision, stuck by it and didnt try to pawn the responsibility for it off on someone else.”
Whatever you think of Truman’s politics you have to admire the fact he always took responsibility for every decision he made. He might later say he made the wrong decision, but he never tried to pass the buck.