HNN has a new article up that discusses the people were against Truman's decision to bomb Hiroshima at the time. The authors mention that Tibbets, the man who dropped the bomb and just recently died, always "reinforced the widely held notion that only untrustworthy revisionists or members of the irresponsible 1960s generation have criticized the atomic bombings," but according Maley and Mohan, "Tibbets was dead wrong." They bring up that many military leaders of the time, including 6 of the 7 wartime five-star officiers, were against the bomb. The authors mention several, but I wanted to share Eisenhower's opinion here:
President Eisenhower, the Allied commander in Europe during World War II, recalled in 1963, as he did on several other occasions, that he had opposed using the atomic bomb on Japan during a July 1945 meeting with Secretary of War Henry Stimson: "I told him I was against it on two counts. First, the Japanese were ready to surrender and it wasn't necessary to hit them with that awful thing. Second, I hated to see our country be the first to use such a weapon."
No matter which side of this debate you fall on, I think it is important to hear both sides of the contemporary discussion.