“[Gen.] Arnold’s view was that the dropping of the atomic bomb was totally unnecessary. He said he knew the Japanese wanted peace. There were political implications in the decision, and Arnold did not feel it was the military’s job to…

 “[Gen.] Arnold’s view was that the dropping of the atomic bomb was totally unnecessary. He said he knew the Japanese wanted peace. There were political implications in the decision, and Arnold did not feel it was the military’s job to question them. … [Arnold’s view was]: when the question comes up of whether we use the atomic bomb or not, my view is that the Air Force will not oppose the use of the bomb, and they will deliver it effectively if the Commander-in-Chief decides to use it. But it is not necessary to use it in order to conquer the Japanese without the necessity of a land invasion.” —General Ira Eaker, Deputy Commander of U.S. Army Air Forces

“The Japanese had, in fact, already sued for peace. The atomic bomb played no decisive part, from a purely military point of view, in the defeat of Japan.” — Fleet Admiral Chester W. Nimitz, Commander in Chief of the U.S. Pacific Fleet

“The Japanese had, in fact, already sued for peace before the atomic age was announced to the world with the destruction of Hiroshima and before the Russian entry into the war.” Adm. Nimitz

“The use of this barbarous weapon at Hiroshima and Nagasaki was of no material assistance in our war against Japan. The Japanese were already defeated and ready to surrender because of the effective sea blockade and the successful bombing with conventional weapons … The lethal possibilities of atomic warfare in the future are frightening. My own feeling was that in being the first to use it, we had adopted an ethical standard common to the barbarians of the Dark Ages. I was not taught to make war in that fashion, and wars cannot be won by destroying women and children.” —Fleet Admiral William D. Leahy, Chief of Staff to President Truman

“Truman told me it was agreed they would use it, after military men’s statements that it would save many, many American lives, by shortening the war, only to hit military objectives. Of course, then they went ahead and killed as many women and children as they could, which was just what they wanted all the time.” —Adm. Leahy

“The war would have been over in two weeks without the Russians entering and without the atomic bomb. … The atomic bomb had nothing to do with the end of the war at all.” — Major General Curtis LeMay, XXI Bomber Command

“[LeMay said] if we’d lost the war, we’d all have been prosecuted as war criminals. And I think he’s right. He, and I’d say I, were behaving as war criminals. LeMay recognized that what he was doing would be thought immoral if his side had lost. But what makes it immoral if you lose and not immoral if you win?” —Robert MacNamara

“The first atomic bomb was an unnecessary experiment … It was a mistake to ever drop it … [the scientists] had this toy and they wanted to try it out, so they dropped it.” — Fleet Admiral William Halsey Jr.

“I concluded that even without the atomic bomb, Japan was likely to surrender in a matter of months. My own view was that Japan would capitulate by November 1945. Even without the attacks on Hiroshima and Nagasaki, it seemed highly unlikely, given what we found to have been the mood of the Japanese government, that a U.S. invasion of the islands scheduled for 1 November 1945 would have been necessary.” —Paul Nitze, director and then Vice Chairman of the Strategic Bombing Survey

“[E]ven without the atomic bombing attacks, air supremacy over Japan could have exerted sufficient pressure to bring about unconditional surrender and obviate the need for invasion. Based on a detailed investigation of all the facts, and supported by the testimony of the surviving Japanese leaders involved, it is the Survey’s opinion that certainly prior to 31 December 1945, and in all probability prior to 1 November 1945, Japan would have surrendered even if the atomic bombs had not been dropped, even if Russia had not entered the war, and even if no invasion had been planned or contemplated.” —U.S. Strategic Bombing Survey, 1946