"世界通史列出的这些军人反对对日本用原子弹，都纯粹从军事角度" - 没有可信的证据。看大英百科全書的观点

https://www.britannica.com/topic/Trumans-decision-to-use-the-bomb-712569

" In later years, several key figures, including General Dwight D. Eisenhower, General Douglas MacArthur, Admiral William Leahy, and Assistant Secretary of War John J. McCloy, claimed to have opposed using the bomb, but there is no firm evidence of any substantial contemporary opposition."