United States Strategic Bombing Survey: Summary Report (Pacific War)
PS - The people directly involved in this conflict (ie - General MacArthur or the Chief of Staff to the President) found the atomic bombings militarily unnecessary:There is little point in attempting precisely to impute Japan's unconditional surrender to any one of the numerous causes which jointly and cumulatively were responsible for Japan's disaster. The time lapse between military impotence and political acceptance of the inevitable might have been shorter had the political structure of Japan permitted a more rapid and decisive determination of national policies. Nevertheless, it seems clear that, even 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.
I suggest reading some of what General MacArthur wrote about the atomic bombings.Other U.S. military officers who disagreed with the necessity of the bombings include General of the Army Douglas MacArthur, Fleet Admiral William D. Leahy (the Chief of Staff to the President), Brigadier General Carter Clarke (the military intelligence officer who prepared intercepted Japanese cables for U.S. officials), and Fleet Admiral Chester W. Nimitz, Commander in Chief of the Pacific Fleet.
"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 use of [the atomic bombs] 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.
Also, the atomic bombing of Nagasaki was completely wrong. The destruction method the United States possessed only needed a few extra days to reach through the hierarchy of Japan. If Hiroshima served to show what was at stake to Japan (as Truman apologists always do), then the Nagasaki bombings only showed the inane lunacy of Truman.