Only hours after the Pearl Harbor attack on 7 December 1941, US naval commanders in the Pacific were ordered to “execute unrestricted air and submarine warfare against the Japanese.” This, ironically, is the very policy which brought the US into the First World War, though it would not be until September 1943 that US submarines in wolf packs would decimate Japan’s shipping. Also, Claire Chennault of “Flying Tigers” fame was urging the firebombing of Japan’s cities well before Pearl Harbor. General Curtis LeMay, architect of the firebombing of Japanese cities, commented after Hiroshima that he thought the nuclear bomb unnecessary as nothing of military value remained to be bombed. It was purely of terror value.
“Now I am Become Death”
“Americans had entered the war violently opposed to the bombing of civilians, and during the campaign in Europe had generally opposed British terror bombing in favor of the costly but less indiscriminate technique of daylight “precision” air raids. [With the order of 7 December], this changed in principle almost immediately in the Pacific.
Even a month prior to Pearl Harbor, George Marshall had instructed aides to develop contingency plans for “general incendiary attacks to burn up the wood and paper structures of the densely populated Japanese cities.”
Three years later, with the arrival of the very long-range B-29 heavy bomber, the M-47 and M-69 napalm bombs, and General Curtis LeMay to command the Twentieth Air Force, these plans came to fruition.
On the night of 9 March 1945, 334 B-29s armed only with incendiaries would attack Tokyo at low levels, and in the ensuing fires 267,000 buildings would burn and over eighty-three thousand people would die. Japanese air defense against such night attacks was almost nonexistent, nor would it improve. By June, over 40 percent of Japan’s six most industrial cities had been gutted and millions dehoused. Yet the Americans had a better way.
It is clear that the primary motive for the program was fear that Nazi Germany would develop nuclear weapons first. However, Ronald Powaski points out that, as early as November 1944, American officials were aware that Germany had no viable nuclear program, and the surrender in May 1945 made this a certainty. Despite this, work on the Manhattan Project not only continued but accelerated.
No one considered the Japanese a threat to develop a bomb. Rather, the bomb was being built to be used. On 1 June President Truman accepted recommendations that it be dropped on Japan as soon as possible – “without specific warning,” he recalled in his memoirs. “When you deal with a beast,” Truman wrote several days after, “you have to treat him like a beast.”
Less than a month earlier, the bomb’s chief designer, J. Robert Oppenheimer, as he watched its first test, remembered some lines from the Bhagavad Gita: “Now I am become death, destroyer of worlds; waiting the hour that ripens to their doom.”
(Of Arms and Men: A History of War, Weapons and Aggression, Robert L. O’Connell, Oxford University Press, 1989, excerpt pp. 293-295)