|Atomic bombings of Hiroshima and Nagasaki|
|Part of the Pacific War, World War II|
Atomic bomb mushroom clouds over Hiroshima (left) and Nagasaki (right)
|Empire of Japan|
|Commanders and leaders|
William S. Parsons|
Paul W. Tibbets, Jr.
509th Composite Group
|Second General Army|
|Casualties and losses|
90,000–166,000 killed in Hiroshima|
60,000–80,000 killed in Nagasaki
Total: 150,000–246,000+ killed
The atomic bombings of the cities of Hiroshima and Nagasaki in Japan were conducted by the United States during the final stages of World War II in 1945. The two events are the only use of nuclear weapons in war to date.
Following a firebombing campaign that destroyed many Japanese cities, the Allies prepared for a costly invasion of Japan. The war in Europe ended when Nazi Germany signed its instrument of surrender on May 8, 1945, but the Pacific War continued. Together with the United Kingdom and the Republic of China, the United States called on Japan to surrender in the Potsdam Declaration on July 26, 1945, threatening "prompt and utter destruction". The Japanese government ignored this ultimatum.
By August 1945, the Allied Manhattan Project had developed and tested atomic bombs, and the United States Army Air Forces 509th Composite Group was equipped with Silverplate Boeing B-29 Superfortress that could deliver them from Tinian in the Mariana Islands. A Little Boy atomic bomb was dropped on the city of Hiroshima on August 6, 1945, followed by a Fat Man bomb on the city of Nagasaki on August 9. Within the first two to four months of the bombings, the acute effects killed 90,000–166,000 people in Hiroshima and 60,000–80,000 in Nagasaki, with roughly half of the deaths in each city occurring on the first day. During the following months, large numbers died from the effect of burns, radiation sickness, and other injuries, compounded by illness. In both cities, most of the dead were civilians, although Hiroshima had a sizeable garrison.
On August 15, six days after the bombing of Nagasaki, Japan announced its surrender to the Allies, signing the Instrument of Surrender on September 2, officially ending World War II. The bombings' role in Japan's surrender and their ethical justification are still debated.
- 1 Background
- 2 Preparations
- 3 Hiroshima
- 4 Events of 7–9 August
- 5 Nagasaki
- 6 Plans for more atomic attacks on Japan
- 7 Surrender of Japan and subsequent occupation
- 8 Depiction, public response and censorship
- 9 Atomic Bomb Casualty Commission
- 10 Hibakusha
- 11 Debate over bombings
- 12 Notes
- 13 References
- 14 Further reading
Background[edit | edit source]
Pacific War[edit | edit source]
In 1945, the Pacific War between the Empire of Japan and the Allies of World War II had entered its fourth year. Of the 1.25 million battle casualties incurred by the United States in World War II, including both soldiers killed in action and wounded in action, nearly one million occurred in the twelve-month period from June 1944 to June 1945. December 1944 saw American battle casualties hit an all-time monthly high of 88,000 as a result of the German Ardennes Offensive.
In the Pacific during this period, the Allies returned to the Philippines, and invaded Borneo. The policy of bypassing Japanese forces was abandoned. In order to free troops for use elsewhere, offensives were undertaken to reduce the Japanese forces remaining in Bougainville, New Guinea and the Philippines. In April 1945, American forces landed on Okinawa, where heavy fighting continued until June. Along the way, the ratio of Japanese to American casualties dropped from 5 to 1 in the Philippines to 2 to 1 on Okinawa.
Preparations to invade Japan[edit | edit source]
Plans were underway for the largest operation of the Pacific War, Operation Downfall, the invasion of Japan, before the surrender of Nazi Germany on May 8, 1945. The operation had two parts: Operations Olympic and Coronet. Set to begin in October 1945, Olympic involved a series of landings by the US Sixth Army intended to capture the southern third of the southernmost main Japanese island, Kyūshū. Operation Olympic was to be followed in March 1946 by Operation Coronet, the capture of the Kantō Plain, near Tokyo on the Japanese island of Honshū by the US First, Eighth and Tenth Armies. The target date was chosen to allow for Olympic to complete its objectives, troops to be redeployed from Europe, and the Japanese winter to pass.
Japan's geography made this invasion plan obvious to the Japanese as well; they were able to predict the Allied invasion plans accurately and thus adjust their defensive plan, Operation Ketsugō, accordingly. The Japanese planned an all-out defense of Kyūshū, with little left in reserve for any subsequent defense operations. Four veteran divisions were withdrawn from the Kwantung Army in Manchuria in March 1945 to strengthen the forces in Japan, and 45 new divisions were activated between February and May 1945. Most were immobile formations for coastal defense, but 16 were high quality mobile divisions. In all, there were 2.3 million Japanese Army troops prepared to defend the home islands, backed by a civilian militia of 28 million men and women. Casualty predictions varied widely, but were extremely high. The Vice Chief of the Imperial Japanese Navy General Staff, Vice Admiral Takijirō Ōnishi, predicted up to 20 million Japanese deaths.
A study from June 15, 1945 by the Joint War Plans Committee, who provided planning information to the Joint Chiefs of Staff, estimated that Olympic would result in between 130,000 and 220,000 US-casualties of which U.S. dead would be the range from 25,000 to 46,000. Delivered on June 15, 1945 after insight gained from the Battle of Okinawa, the study noted Japan's inadequate defenses due to the very effective sea blockade and the American firebombing campaign. The Chief of Staff of the United States Army, General of the Army George Marshall, and the Army Commander in Chief in the Pacific, General of the Army Douglas MacArthur, signed documents agreeing with the Joint War Plans Committee estimate.
The Americans were alarmed by the Japanese build up, which was accurately tracked through Ultra intelligence. Secretary of War Henry L. Stimson was sufficiently concerned about high American estimates of probable casualties to commission his own study by Quincy Wright and William Shockley. Wright and Shockley spoke with Colonels James McCormack and Dean Rusk, and examined casualty forecasts by Michael E. DeBakey and Gilbert Beebe. Wright and Shockley estimated the invading Allies would suffer between 1.7 and 4 million casualties in such a scenario, of whom between 400,000 and 800,000 would be dead, while Japanese casualties would have been around 5 to 10 million.
Marshall began contemplating the use of a weapon which was "readily available and which assuredly can decrease the cost in American lives": poison gas. Quantities of phosgene, mustard gas, tear gas and cyanogen chloride were moved to Luzon from stockpiles in Australia and New Guinea in preparation for Operation Olympic, and MacArthur ensured that Chemical Warfare Service units were trained in their use.
Air raids on Japan[edit | edit source]
While the United States had developed plans for an air campaign against Japan prior to the Pacific War, the capture of Allied bases in the western Pacific in the first weeks of the conflict meant that this offensive did not begin until mid-1944 when the long-ranged Boeing B-29 Superfortress became ready for use in combat. Operation Matterhorn involved India-based B-29s staging through bases around Chengdu in China to make a series of raids on strategic targets in Japan. However, it had failed to achieve the strategic objectives that the planners had intended, largely because of logistical problems, the bomber's mechanical difficulties, the vulnerability of Chinese staging bases, and the extreme range required to reach key Japanese cities.
United States Army Air Forces (USAAF) Brigadier General Haywood S. Hansell determined that Guam, Tinian, and Saipan in the Mariana Islands would better serve as B-29 bases, but they were in Japanese hands. Strategies were shifted to accommodate the air war, and the islands were captured between June and August 1944. Air bases were developed, and B-29 operations commenced from the Marianas in October 1944. These bases were easily resupplied by cargo ships. The XXI Bomber Command began missions against Japan on November 18, 1944.
The early attempts to bomb Japan from the Marianas proved just as ineffective as the China-based B-29s had been. Hansell continued the practice of conducting so-called high-altitude precision bombing even after these tactics had not produced acceptable results. These efforts proved unsuccessful due to logistical difficulties with the remote location, technical problems with the new and advanced aircraft, unfavorable weather conditions, and ultimately enemy action.
Hansell's successor, Major General Curtis LeMay, assumed command in January 1945 and continued to use the same tactics, with equally unsatisfactory results. LeMay realized that he would have to change tactics and decided that low-level incendiary raids against Japanese cities were the only way to destroy their production capabilities, shifting from precision bombing to area bombing with incendiaries. The attacks initially targeted key industrial facilities but from March 1945, they were frequently directed against urban areas. Much of the manufacturing process was carried out in small workshops and private homes.
Over the next six months, the XXI Bomber Command under LeMay firebombed 67 Japanese cities. The firebombing of Tokyo, codenamed Operation Meetinghouse, on March 9–10 killed an estimated 100,000 people and destroyed 16 square miles (41 km2) of the city and 267,000 buildings in a single night–the deadliest bombing raid of the war–at a cost of 20 B-29s shot down by flak and fighters. The capture of Okinawa in June 1945 provided airfields even closer to the Japanese mainland, allowing the bombing campaign to be escalated further. Aircraft flying from Allied aircraft carriers and the Ryukyu Islands also regularly struck targets in Japan during 1945 in preparation for Operation Downfall.
The Japanese military was unable to stop the Allied attacks and the country's civil defense preparations proved inadequate. From April 1945, the Imperial Japanese Army Air Service and Imperial Japanese Navy Air Service stopped attempting to intercept the air raids in order to preserve fighter aircraft to counter the expected invasion. By mid-1945 the Japanese also only occasionally scrambled aircraft to intercept individual B-29s conducting reconnaissance sorties over the country, in order to conserve supplies of fuel. By July 1945, the Japanese had stockpiled 1,156,000 US barrels (137,800,000 l; 36,400,000 US gal; 30,300,000 imp gal) of avgas for the invasion of Japan.
Atomic bomb development[edit | edit source]
Working in collaboration with the United Kingdom and Canada, with their respective projects Tube Alloys and Chalk River Laboratories, the Manhattan Project, under the direction of Major General Leslie R. Groves, Jr., of the U.S. Army Corps of Engineers, designed and built the first atomic bombs. Preliminary research began in 1939, originally in fear that the German atomic bomb project would develop atomic weapons first. In May 1945, the defeat of Germany caused the focus to turn to use against Japan.
Two types of bombs were eventually devised by scientists and technicians at the Los Alamos under American physicist J. Robert Oppenheimer. The Hiroshima bomb, known as a Little Boy, was a gun-type fission weapon made with uranium-235, a rare isotope of uranium extracted in giant factories in Oak Ridge, Tennessee. The other was an implosion-type nuclear weapon using plutonium-239, a synthetic element created in nuclear reactors at Hanford, Washington. A test implosion weapon, the gadget, was detonated at Trinity Site, on July 16, 1945, near Alamogordo, New Mexico. The Nagasaki bomb, a Fat Man, was a similar implosion device.
Preparations[edit | edit source]
Organization and training[edit | edit source]
The 509th Composite Group was constituted on December 9, 1944, and activated on December 17, 1944, at Wendover Army Air Field, Utah, commanded by Colonel Paul Tibbets. Tibbets was assigned to organize and command a combat group to develop the means of delivering an atomic weapon against targets in Germany and Japan. Because the flying squadrons of the group consisted of both bomber and transport aircraft, the group was designated as a "composite" rather than a "bombardment" unit.
Working with the Manhattan Project at Los Alamos, Tibbets selected Wendover for his training base over Great Bend, Kansas, and Mountain Home, Idaho because of its remoteness. On September 10, 1944, the 393d Bombardment Squadron, a B-29 unit, arrived at Wendover from the 504th Bombardment Group (Very Heavy) at Fairmont Army Air Base, Nebraska, where it had been in group training since 12 March. When its parent group deployed to the Mariana Islands in early November 1944, the squadron was assigned directly to the Second Air Force until creation of the 509th Composite Group.
The 320th Troop Carrier Squadron (TCS), the other flying unit of the 509th, came into being because of the highly secret work of the group. The organization that was to become the 509th required its own transports for the movement of both personnel and materiel, resulting in creation of an ad hoc unit nicknamed "The Green Hornet Line". Crews for this unit were acquired from the six 393rd crews not selected to continue B-29 training, some of whom chose to remain with the 509th rather than be assigned to a replacement pool of the Second Air Force. They began using Curtiss C-46 Commandos and C-47 Skytrains already at Wendover, and after November 1944 flew five acquired C-54 Skymasters.
Other support units were activated at Wendover from personnel already present and working with its Project W-47, which was later superseded by Project Alberta, or in the 216th AAF Base Unit, both of which were affiliated with the Los Alamos Laboratory. The 390th Air Service Group was created as the command echelon for the 603rd Air Engineering Squadron, the 1027th Air Material squadron, and its own Air Base Support Squadron, but as these units became independent operationally, acted as the basic support unit for the entire 509th Composite Group in providing quarters, rations, medical care, postal service and other basic support functions. The 603rd Air Engineering Squadron was unique in that it provided depot-level B-29 maintenance in the field, obviating the necessity of sending aircraft back to the United States for major repairs. The 603rd made a number of modifications to the first contract order of Silverplate B-29s that were later incorporated as specifications for the combat models.
The 393rd Bomb Squadron began replacement of its original B-29s with modified Silverplate aircraft with the delivery of three new B-29s in mid-October 1944. These aircraft had extensive bomb bay modifications and a "weaponeer" station installed, but initial training operations identified numerous other modifications necessary to the mission, particularly in reducing the overall weight of the aircraft to offset the heavy loads it would be required to carry. Five more Silverplates were delivered in November and six in December, giving the group 14 for its training operations.
On March 6, 1945, the 1st Ordnance Squadron (Special, Aviation) was activated at Wendover, again from Army Air Forces personnel on hand or already at Los Alamos, and concurrent with the activation of Project Alberta. Its purpose was to provide trained personnel and special equipment to the group to enable it to assemble atomic weapons at its operating base, thereby allowing the weapons to be transported more safely in their component parts. A rigorous candidate selection process was used to recruit personnel, with reportedly an 80% "washout" rate, and those made a part of the unit were not permitted transfer until the end of the war, nor were they allowed to travel without escorts from military Intelligence units.
With the addition of the 1st Ordnance Squadron to its roster, the 509th Composite Group had an authorized strength of 225 officers and 1,542 enlisted men, almost all of whom deployed to Tinian. The 320th Troop Carrier Squadron did not officially deploy but kept its base of operations at Wendover. In addition to its authorized strength, the 509th had attached to it on Tinian 51 civilian and military personnel of Project Alberta, known as the 1st Technical Detachment. There were also two representatives from Washington, D.C., Brigadier General Thomas Farrell, the deputy commander of the Manhattan Project, and Rear Admiral William R. Purnell of the Military Policy Committee, who were on hand to decide higher policy matters on the spot. Along with Captain William S. Parsons, the commander of Project Alberta, they became known as the "Tinian Joint Chiefs".
The 509th began replacement of its 14 training Silverplates in February 1945 by transferring four to the 216th AAF Base Unit. In April they began receiving Silverplates of the third modification increment and the remaining ten training B-29s were placed in storage. Each bombardier completed at least 50 practice drops of inert pumpkin bombs and Tibbets declared his group combat-ready.
Choice of targets[edit | edit source]
Marshall asked Groves to nominate specific targets for bombing, subject to approval by himself and Stimson. Groves formed a Target Committee in April 1945 chaired by himself, that included Farrell, Major John A. Derry, Colonel William P. Fisher, Joyce C. Stearns and David M. Dennison from the USAAF; and scientists John von Neumann, Robert R. Wilson and William Penney from the Manhattan Project. The Target Committee met on April 27; at Los Alamos on May 10, where it was able to talk to the scientists and technicians there; and finally in Washington on May 28, where it was briefed by Tibbets and Commander Frederick Ashworth from Project Alberta, and the Manhattan Project's scientific advisor, Richard C. Tolman.
The Target Committee nominated four targets: Kokura, the site of one of Japan's largest munitions plants; Hiroshima, an embarkation port and industrial center that was the site of a major military headquarters; Niigata, a port with industrial facilities including steel and aluminium plants and an oil refinery; and Kyoto, a major industrial center. The target selection was subject to the following criteria:
- The target was larger than 3 mi (4.8 km) in diameter and was an important target in a large urban area.
- The blast would create effective damage.
- The target was unlikely to be attacked by August 1945. "Any small and strictly military objective should be located in a much larger area subject to blast damage in order to avoid undue risks of the weapon being lost due to bad placing of the bomb."
These cities were largely untouched during the nightly bombing raids and the Army Air Force agreed to leave them off the target list so accurate assessment of the weapon could be made. Hiroshima was described as "an important army depot and port of embarkation in the middle of an urban industrial area. It is a good radar target and it is such a size that a large part of the city could be extensively damaged. There are adjacent hills which are likely to produce a focusing effect which would considerably increase the blast damage. Due to rivers it is not a good incendiary target."
The goal of the weapon was to convince Japan to surrender unconditionally in accordance with the terms of the Potsdam Declaration. The Target Committee stated that "It was agreed that psychological factors in the target selection were of great importance. Two aspects of this are (1) obtaining the greatest psychological effect against Japan and (2) making the initial use sufficiently spectacular for the importance of the weapon to be internationally recognized when publicity on it is released. Kyoto had the advantage of being an important center for military industry, as well an intellectual center and hence better able to appreciate the significance of the weapon. The Emperor's palace in Tokyo has a greater fame than any other target but is of least strategic value."
Edwin O. Reischauer, a Japan expert for the US Army Intelligence Service, was incorrectly said to have prevented the bombing of Kyoto. In his autobiography, Reischauer specifically refuted this claim:
... the only person deserving credit for saving Kyoto from destruction is Henry L. Stimson, the Secretary of War at the time, who had known and admired Kyoto ever since his honeymoon there several decades earlier.
On July 25, Nagasaki was put on the target list in place of Kyoto.
Leaflets[edit | edit source]
For several months, the US had dropped more than 63 million leaflets across Japan, warning civilians of air raids. Many Japanese cities suffered terrible damage from aerial bombings, some even 97% destruction. In general, the Japanese regarded the leaflet messages as truthful, but anyone who was caught in possession of one was arrested. Leaflet texts were prepared by recent Japanese prisoners of war because they were thought to be the best choice "to appeal to their compatriots."
In preparation for dropping an atomic bomb on Hiroshima, US military leaders decided against a demonstration bomb, and against a special leaflet warning, in both cases because of the uncertainty of a successful detonation, and the wish to maximize psychological shock. No warning was given to Hiroshima that a new and much more destructive bomb was going to be dropped. Various sources give conflicting information about when the last leaflets were dropped on Hiroshima prior to the atomic bomb. Robert Jay Lifton writes that it was July 27, and Theodore H. McNelly that it was July 3. The USAAF history notes eleven cities were targeted with leaflets on July 27, but Hiroshima was not one of them, and there were no leaflet sorties on July 30. Leaflet sorties were undertaken on August 1 and 4. It is very likely that Hiroshima was leafleted in late July or early August, as survivor accounts talk about a delivery of leaflets a few days before the atomic bomb was dropped. One such leaflet lists twelve cities targeted for firebombing: Otaru, Akita, Hachinohe, Fukushima, Urawa, Takayama, Iwakuni, Tottori, Imabari, Yawata, Miyakonojo, and Saga. Hiroshima was not listed.
Potsdam ultimatum[edit | edit source]
On 26 July, Allied leaders issued the Potsdam Declaration outlining terms of surrender for Japan. It was presented as an ultimatum and stated that without a surrender, the Allies would attack Japan, resulting in "the inevitable and complete destruction of the Japanese armed forces and just as inevitably the utter devastation of the Japanese homeland". The atomic bomb was not mentioned in the communiqué. On 28 July Japanese papers reported that the declaration had been rejected by the Japanese government. That afternoon, Prime Minister Suzuki Kantarō declared at a press conference that the Potsdam Declaration was no more than a rehash (yakinaoshi) of the Cairo Declaration and that the government intended to ignore it (mokusatsu, "kill by silence"). The statement was taken by both Japanese and foreign papers as a clear rejection of the declaration. Emperor Hirohito, who was waiting for a Soviet reply to non-committal Japanese peace feelers, made no move to change the government position.
Under the 1943 Quebec Agreement with the United Kingdom, the United States had agreed that nuclear weapons would not be used against another country without mutual consent. In June 1945 the head of the British Joint Staff Mission, Field Marshal Sir Henry Maitland Wilson, agreed that the use of nuclear weapons against Japan would be officially recorded as a decision of the Combined Policy Committee. At Potsdam, Truman agreed to a request from the Prime Minister of the United Kingdom, Winston Churchill, that Britain be represented when the atomic bomb was dropped. William Penney and Group Captain Leonard Cheshire were sent to Tinian, but found that LeMay would not let them accompany the mission. All they could do was send a strongly worded signal back to Wilson.
Hiroshima[edit | edit source]
Hiroshima during World War II[edit | edit source]
At the time of its bombing, Hiroshima was a city of both industrial and military significance. A number of military units were located nearby, the most important of which was the headquarters of Field Marshal Shunroku Hata's Second General Army, which commanded the defense of all of southern Japan, and was located in the Hiroshima Castle. Hata's command consisted of some 400,000 men, most of whom were on Kyushu where an Allied invasion was correctly anticipated. Also present in Hiroshima were the headquarters of the 59th Army, the 5th Division and the 224th Division, a recently formed mobile unit. The city was defended by five batteries of 7-and-8-centimetre (2.8 and 3.1 in) anti-aircraft guns of the 3rd Anti-Aircraft Division, including units from the 121st and 122nd Anti-Aircraft Regiments and the 22nd and 45th Separate Anti-Aircraft Battalions. In total, over 40,000 military personnel were stationed in the city.
Hiroshima was a minor supply and logistics base for the Japanese military, but it also had large stockpiles of military supplies. The city was a communications center, a key port for shipping and an assembly area for troops. It was one of several Japanese cities left deliberately untouched by American bombing, allowing a pristine environment to measure the damage caused by the atomic bomb.
The center of the city contained several reinforced concrete buildings and lighter structures. Outside the center, the area was congested by a dense collection of small wooden workshops set among Japanese houses. A few larger industrial plants lay near the outskirts of the city. The houses were constructed of wood with tile roofs, and many of the industrial buildings were also built around wood frames. The city as a whole was highly susceptible to fire damage.
The population of Hiroshima had reached a peak of over 381,000 earlier in the war, but prior to the atomic bombing the population had steadily decreased because of a systematic evacuation ordered by the Japanese government. At the time of the attack, the population was approximately 340,000–350,000. Residents wondered why Hiroshima had been spared destruction by firebombing. Some speculated that the city was to be saved for US occupation headquarters, others thought perhaps their relatives in Hawaii and California had petitioned the US government to avoid bombing Hiroshima. More realistic city officials had ordered buildings torn down to create long, straight firebreaks, beginning in 1944. Firebreaks continued to be expanded and extended, right up to the morning of August 6, 1945.
The bombing[edit | edit source]
Hiroshima was the primary target of the first nuclear bombing mission on 6 August, with Kokura and Nagasaki as alternative targets. The 393d Bombardment Squadron B-29 Enola Gay, piloted by Tibbets, took off from North Field airbase on Tinian, about six hours flight time from Japan. The Enola Gay (named after Tibbets' mother) was accompanied by two other B-29s. The Great Artiste, commanded by Major Charles Sweeney, carried instrumentation, and a then-nameless aircraft later called Necessary Evil, commanded by Captain George Marquardt, served as the photography aircraft.
|Aircraft||Pilot||Call Sign||Mission role|
|Straight Flush||Major Claude R. Eatherly||Dimples 85||Weather reconnaissance (Hiroshima)|
|Jabit III||Major John A. Wilson||Dimples 71||Weather reconnaissance (Kokura)|
|Full House||Major Ralph R. Taylor||Dimples 83||Weather reconnaissance (Nagasaki)|
|Enola Gay||Colonel Paul W. Tibbets||Dimples 82||Weapon Delivery|
|The Great Artiste||Major Charles W. Sweeney||Dimples 89||Blast measurement instrumentation|
|Necessary Evil||Captain. George W. Marquardt||Dimples 91||Strike observation and photography|
|Top Secret||Captain Charles F. McKnight||Dimples 72||Strike spare—did not complete mission|
After leaving Tinian the aircraft made their way separately to Iwo Jima to rendezvous at 2,440 meters (8,010 ft) and set course for Japan. The aircraft arrived over the target in clear visibility at 9,855 meters (32,333 ft). Parsons, who was in command of the mission, armed the bomb during the flight to minimize the risks during takeoff. His assistant, Second Lieutenant Morris R. Jeppson, removed the safety devices 30 minutes before reaching the target area.
Japanese early warning radar detected the approach of some American aircraft headed for the southern part of Japan. Radar detected 65 bombers headed for Saga, 102 bound for Maebashi, 261 en route to Nishinomiya, 111 headed for Ube and 66 bound for Imabari. An alert was given and radio broadcasting stopped in many cities, among them Hiroshima. The all-clear was sounded in Hiroshima at 12:05. About an hour before the bombing, the air raid alert was sounded again, as Straight Flush flew over the city. It broadcast a short message which was picked up by Enola Gay. It read: "Cloud cover less than 3/10th at all altitudes. Advice: bomb primary." The all-clear was sounded over Hiroshima again at 07:09.
At 08:09 Tibbets started his bomb run and handed control over to his bombardier, Major Thomas Ferebee. The release at 08:15 (Hiroshima time) went as planned, and the Little Boy containing about 64 kg (141 lb) of uranium-235, took 43 seconds to fall from the aircraft flying at 31,060 feet (9,470 m) to the predetermined detonation height about 1,968 feet (600 m) above the city. Enola Gay traveled 11.5 mi (18.5 km) before it felt the shock waves from the blast.
Due to crosswind, the bomb missed the aiming point, the Aioi Bridge, by approximately 800 ft (240 m) and detonated directly over Shima Surgical Clinic. It created a blast equivalent to 16 kilotons of TNT (67 TJ). The weapon was considered very inefficient, with only 1.7% of its material fissioning. The radius of total destruction was about one mile (1.6 km), with resulting fires across 4.4 square miles (11 km2). Americans estimated that 4.7 square miles (12 km2) of the city were destroyed. Japanese officials determined that 69% of Hiroshima's buildings were destroyed and another 6–7% damaged.
Some 70,000–80,000 people, or some 30% of the population of Hiroshima, were killed by the blast and resultant firestorm, and another 70,000 injured. Over 90% of the doctors and 93% of the nurses in Hiroshima were killed or injured—most had been in the downtown area which received the greatest damage. Out of some 70,000–80,000 people killed, 20,000 were soldiers. Most elements of the Japanese Second General Army headquarters were at physical training on the grounds of Hiroshima Castle when the bomb exploded. Barely 900 yards from the explosion's hypocenter, the castle and its residents were vaporized. The bomb also killed 12 American airmen who were imprisoned at the Chugoku Military Police Headquarters located about 1,300 feet (400 meters) from the hypocenter of the blast. All died in less than a second.
Japanese realization of the bombing[edit | edit source]
The Tokyo control operator of the Broadcasting Corporation of Japan noticed that the Hiroshima station had gone off the air. He tried to re-establish his program by using another telephone line, but it too had failed. About 20 minutes later the Tokyo railroad telegraph center realized that the main line telegraph had stopped working just north of Hiroshima. From some small railway stops within 16 km (9.9 mi) of the city came unofficial and confused reports of a terrible explosion in Hiroshima. All these reports were transmitted to the headquarters of the Imperial Japanese Army General Staff.
Military bases repeatedly tried to call the Army Control Station in Hiroshima. The complete silence from that city puzzled the General Staff; they knew that no large enemy raid had occurred and that no sizable store of explosives was in Hiroshima at that time. A young officer was instructed to fly immediately to Hiroshima, to land, survey the damage, and return to Tokyo with reliable information for the staff. It was felt that nothing serious had taken place and that the explosion was just a rumor.
The staff officer went to the airport and took off for the southwest. After flying for about three hours, while still nearly 160 km (99 mi) from Hiroshima, he and his pilot saw a great cloud of smoke from the bomb. In the bright afternoon, the remains of Hiroshima were burning. Their plane soon reached the city, around which they circled in disbelief. A great scar on the land still burning and covered by a heavy cloud of smoke was all that was left. They landed south of the city, and the staff officer, after reporting to Tokyo, began to organize relief measures. Since Mayor Senkichi Awaya was dead (killed while eating breakfast with his son and granddaughter at the mayoral residence), Field Marshal Hata, who was only slightly wounded, took over the administration of the city, and coordinated relief efforts. Many of his staff had been killed, including a Korean prince of the Joseon Dynasty, Yi Wu, who was serving as a lieutenant colonel in the Japanese Army.
Post-attack casualties[edit | edit source]
Around 1,900 cancer deaths can be attributed to the after-effects of the bombs. An epidemiology study by the Japanese Radiation Effects Research Foundation states that from 1950 to 2000, 46% of leukemia deaths and 11% of solid cancer deaths among the bomb survivors were due to radiation from the bombs, the statistical excess being estimated at 200 leukemia and 1700 solid cancers.
Survival of some structures[edit | edit source]
Some of the reinforced concrete buildings in Hiroshima had been very strongly constructed because of the earthquake danger in Japan, and their framework did not collapse even though they were fairly close to the blast center. Eizo Nomura (野村 英三 Nomura Eizō ) was the closest known survivor, who was in the basement of a reinforced concrete building (it remained as the Rest House after the war) only 170 m (560 ft) from ground zero (the hypocenter) at the time of the attack. He lived into his 80s. Akiko Takakura (高蔵 信子 Takakura Akiko ) was among the closest survivors to the hypocenter of the blast. She had been in the solidly built Bank of Hiroshima only 300 meters (980 ft) from ground-zero at the time of the attack.
Since the bomb detonated in the air, the blast was directed more downward than sideways, which was largely responsible for the survival of the Prefectural Industrial Promotional Hall, now commonly known as the Genbaku, or A-bomb Dome. This building was designed and built by the Czech architect Jan Letzel, and was only 150 m (490 ft) from ground zero. The ruin was named Hiroshima Peace Memorial and was made a UNESCO World Heritage Site in 1996 over the objections of the United States and China, which expressed reservations on the grounds that other Asian nations were the ones who suffered the greatest loss of life and property, and a focus on Japan lacked historical perspective.
- Hiroshima bombing
Events of 7–9 August[edit | edit source]
President Truman announces the bombing of Hiroshima.
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After the Hiroshima bombing, Truman issued a statement announcing the use of the new weapon. He stated, "We may be grateful to Providence" that the German atomic bomb project had failed, and that the United States and its allies had "spent two billion dollars on the greatest scientific gamble in history—and won." Truman then warned Japan:
If they do not now accept our terms, they may expect a rain of ruin from the air, the like of which has never been seen on this earth. Behind this air attack will follow sea and land forces in such numbers and power as they have not yet seen and with the fighting skill of which they are already well aware.
The Japanese government did not react. Emperor Hirohito, the government, and the war council considered four conditions for surrender: the preservation of the kokutai (Imperial institution and national polity), assumption by the Imperial Headquarters of responsibility for disarmament and demobilization, no occupation of the Japanese Home Islands, Korea, or Formosa, and delegation of the punishment of war criminals to the Japanese government.
The Soviet Foreign Minister Vyacheslav Molotov informed Tokyo of the Soviet Union's unilateral abrogation of the Soviet–Japanese Neutrality Pact on 5 August. At two minutes past midnight on 9 August, Tokyo time, Soviet infantry, armor, and air forces had launched the Manchurian Strategic Offensive Operation. Four hours later, word reached Tokyo of the Soviet Union's official declaration of war. The senior leadership of the Japanese Army began preparations to impose martial law on the nation, with the support of Minister of War Korechika Anami, in order to stop anyone attempting to make peace.
Purnell, Parsons, Tibbets, Spaatz and LeMay met on Guam on 7 August to discuss what should be done next. Since there was no indication of Japan surrendering, they decided to proceed with dropping a second bomb, something that Purnell had long felt would be necessary. Parsons said that Project Alberta would have the second bomb ready by 11 August. Tibbets pointed to weather reports indicating poor flying conditions due to a storm on 11 August, and asked if the bomb could be readied by 9 August. Parsons agreed to try to do so.
Nagasaki[edit | edit source]
I realize the tragic significance of the atomic bomb ... It is an awful responsibility which has come to us ... We thank God that it has come to us, instead of to our enemies; and we pray that He may guide us to use it in His ways and for His purposes.
Nagasaki during World War II[edit | edit source]
The city of Nagasaki had been one of the largest seaports in southern Japan, and was of great wartime importance because of its wide-ranging industrial activity, including the production of ordnance, ships, military equipment, and other war materials. The four largest companies in the city were Mitsubishi Shipyards, Electrical Shipyards, Arms Plant, and Steel and Arms Works, which employed about 90% of the city's labor force, and accounted for 90% of the city's industry.
Nagasaki was not the target of large-scale bombing prior to August 9, 1945. However, the city had been previously bombed on a small scale five times. Of these raids, on 1 August, a number of conventional high-explosive bombs were dropped on the city. A few hit the shipyards and dock areas in the southwest portion of the city, and several hit the Mitsubishi Steel and Arms Works. By early August, the city was defended by the IJA 134th Anti-Aircraft Regiment of the 4th Anti-Aircraft Division with four batteries of 7 cm (2.8 in) anti-aircraft guns and two searchlight batteries.
In contrast to many modern aspects of Hiroshima, almost all of the buildings were of old-fashioned Japanese construction, consisting of wood or wood-frame buildings with wood walls (with or without plaster) and tile roofs. Many of the smaller industries and business establishments were also situated in buildings of wood or other materials not designed to withstand explosions. Nagasaki had been permitted to grow for many years without conforming to any definite city zoning plan; residences were erected adjacent to factory buildings and to each other almost as closely as possible throughout the entire industrial valley. On the day of the bombing, an estimated 263,000 people were in Nagasaki, including 240,000 Japanese residents, 10,000 Korean residents, 2,500 conscripted Korean workers, 9,000 Japanese soldiers, 600 conscripted Chinese workers, and 400 prisoners of war in a camp to the north of Nagasaki.
The bombing[edit | edit source]
Responsibility for the timing of the second bombing was delegated to Tibbets. Scheduled for 11 August against Kokura, the raid was moved earlier by two days to avoid a five-day period of bad weather forecast to begin on 10 August. Three bomb pre-assemblies had been transported to Tinian, labeled F-31, F-32, and F-33 on their exteriors. On 8 August, a dress rehearsal was conducted off Tinian by Sweeney using Bockscar as the drop airplane. Assembly F-33 was expended testing the components and F-31 was designated for the August 9 mission.
|Aircraft||Pilot||Call Sign||Mission role|
|Enola Gay||Captain George W. Marquardt||Dimples 82||Weather reconnaissance (Kokura)|
|Laggin' Dragon||Captain Charles F. McKnight||Dimples 95||Weather reconnaissance (Nagasaki)|
|Bockscar||Major Charles W. Sweeney||Dimples 77||Weapon Delivery|
|The Great Artiste||Captain Frederick C. Bock||Dimples 89||Blast measurement instrumentation|
|Big Stink||Major James I. Hopkins, Jr.||Dimples 90||Strike observation and photography|
|Full House||Major Ralph R. Taylor||Dimples 83||Strike spare—did not complete mission|
At 03:49 on the morning of August 9, 1945, Bockscar, flown by Sweeney's crew, carried Fat Man, with Kokura as the primary target and Nagasaki the secondary target. The mission plan for the second attack was nearly identical to that of the Hiroshima mission, with two B-29s flying an hour ahead as weather scouts and two additional B-29s in Sweeney's flight for instrumentation and photographic support of the mission. Sweeney took off with his weapon already armed but with the electrical safety plugs still engaged.
During pre-flight inspection of Bockscar, the flight engineer notified Sweeney that an inoperative fuel transfer pump made it impossible to use 640 US gallons (2,400 l; 530 imp gal) of fuel carried in a reserve tank. This fuel would still have to be carried all the way to Japan and back, consuming still more fuel. Replacing the pump would take hours; moving the Fat Man to another aircraft might take just as long and was dangerous as well, as the bomb was live. Tibbets and Sweeney therefore elected to have Bockscar continue the mission.
This time Penney and Cheshire were allowed to accompany the mission, flying as observers on the third plane, Big Stink, which was flown by the group's operations officer, Major James I. Hopkins, Jr. Observers aboard the weather planes reported both targets clear. When Sweeney's aircraft arrived at the assembly point for his flight off the coast of Japan, Big Stink failed to make the rendezvous. Though ordered not to circle longer than fifteen minutes, Sweeney continued to wait for The Big Stink, at the urging of Ashworth, the plane's weaponeer, who was in command of the mission.
After exceeding the original departure time limit by a half hour, Bockscar, accompanied by The Great Artiste, the support B-29 flown by Captain Frederick C. Bock, proceeded to Kokura, thirty minutes away. The delay at the rendezvous had resulted in clouds and drifting smoke from fires started by a major firebombing raid by 224 B-29s on nearby Yawata the previous day covering 70% of the area over Kokura, obscuring the aiming point. Three bomb runs were made over the next 50 minutes, burning fuel and exposing the aircraft repeatedly to the heavy defenses of Yawata, but the bombardier was unable to drop visually. By the time of the third bomb run, Japanese antiaircraft fire was getting close, and Second Lieutenant Jacob Beser, who was monitoring Japanese communications, reported activity on the Japanese fighter direction radio bands.
By the time they reached Kokura a half hour later, a 70% cloud cover had obscured the city, inhibiting the visual attack required by orders. After three runs over the city, and with fuel running low because a transfer pump on a reserve tank had failed before take-off, they headed for their secondary target, Nagasaki. Fuel consumption calculations made en route indicated that Bockscar had insufficient fuel to reach Iwo Jima and would be forced to divert to Okinawa. After initially deciding that if Nagasaki were obscured on their arrival the crew would carry the bomb to Okinawa and dispose of it in the ocean if necessary, Ashworth ruled that a radar approach would be used if the target was obscured.
At about 07:50 Japanese time, an air raid alert was sounded in Nagasaki, but the "all clear" signal was given at 08:30. When only two B-29 Superfortresses were sighted at 10:53, the Japanese apparently assumed that the planes were only on reconnaissance and no further alarm was given.
A few minutes later at 11:00, The Great Artiste dropped instruments attached to three parachutes. These instruments also contained an unsigned letter to Professor Ryokichi Sagane, a nuclear physicist at the University of Tokyo who studied with three of the scientists responsible for the atomic bomb at the University of California, Berkeley, urging him to tell the public about the danger involved with these weapons of mass destruction. The messages were found by military authorities but not turned over to Sagane until a month later. In 1949, one of the authors of the letter, Luis Alvarez, met with Sagane and signed the document.
At 11:01, a last minute break in the clouds over Nagasaki allowed Bockscar's bombardier, Captain Kermit Beahan, to visually sight the target as ordered. The Fat Man weapon, containing a core of about 6.4 kg (14 lb) of plutonium, was dropped over the city's industrial valley. It exploded 43 seconds later at 469 m (1,539 ft) above the ground halfway between the Mitsubishi Steel and Arms Works in the south and the Mitsubishi-Urakami Ordnance Works (Torpedo Works) in the north. This was nearly 3 km (1.9 mi) northwest of the planned hypocenter; the blast was confined to the Urakami Valley and a major portion of the city was protected by the intervening hills. The resulting explosion had a blast yield equivalent to 21 kt (88 TJ). The explosion generated heat estimated at 3,900 °C (7,050 °F) and winds that were estimated at 1,005 km/h (624 mph). Casualty estimates for immediate deaths range from 40,000 to 75,000. Total deaths by the end of 1945 may have reached 80,000.
Unlike Hiroshima's military death toll, only 150 soldiers were killed instantly, including thirty-six from the IJA 134th AAA Regiment of the 4th AAA Division. At least eight known POWs died from the bombing and as many as 13 POWs may have died, including a British citizen, Royal Air Force Corporal Ronald Shaw, and seven Dutch POWs. One American POW, Joe Kieyoomia, was in Nagasaki at the time of the bombing but survived, reportedly having been shielded from the effects of the bomb by the concrete walls of his cell. The radius of total destruction was about 1 mi (1.6 km), followed by fires across the northern portion of the city to 2 mi (3.2 km) south of the bomb.
About 58% of the Mitsubishi Arms Plant was damaged, and about 78% of the Mitsubishi Steel Works. The Mitsubishi Electric Works only suffered 10% structural damage as it was on the border of the main destruction zone. The Mitsubishi-Urakami Ordnance Works, the factory that manufactured the type 91 torpedoes released in the attack on Pearl Harbor, was destroyed in the blast.
Because of the delays in the mission and the inoperative fuel transfer pump, the B-29 did not have sufficient fuel to reach the emergency landing field at Iwo Jima, so Sweeney flew the aircraft to Okinawa. Arriving there, he circled for 20 minutes trying to contact the control tower for landing clearance, finally concluding that his radio was faulty. Critically low on fuel, Bockscar barely made it to the runway on Okinawa's Yontan Airfield. With only enough fuel for one landing attempt, Sweeney and Albury brought Bockscar in at 150 miles per hour (240 km/h) instead of the normal 120 miles per hour (190 km/h), firing distress flares to alert the field of the uncleared landing. The number two engine died from fuel starvation as Bockscar began its final approach. Touching the runway hard, the heavy B-29 slewed left and towards a row of parked B-24 bombers before the pilots managed to regain control. The B-29's reversible propellers were insufficient to slow the aircraft adequately, and with both pilots standing on the brakes, Bockscar made a swerving 90-degree turn at the end of the runway to avoid running off the runway. A second engine died from fuel exhaustion by the time the plane came to a stop. The flight engineer later measured fuel in the tanks and concluded that less than five minutes total remained.
Following the mission, there was confusion over the identification of the plane.The first eyewitness account by war correspondent William L. Laurence of the New York Times, who accompanied the mission aboard the aircraft piloted by Bock, reported that Sweeney was leading the mission in The Great Artiste. However, he also noted its "Victor" number as 77, which was that of Bockscar, writing that several personnel commented that 77 was also the jersey number of the football player Red Grange. Laurence had interviewed Sweeney and his crew in depth and was aware that they referred to their airplane as The Great Artiste. Except for Enola Gay, none of the 393d's B-29s had yet had names painted on the noses, a fact which Laurence himself noted in his account, and unaware of the switch in aircraft, Laurence assumed Victor 77 was The Great Artiste, which was in fact, Victor 89.
- Bombing of Nagasaki
Plans for more atomic attacks on Japan[edit | edit source]
Groves expected to have another atomic bomb ready for use on 19 August, with three more in September and a further three in October. On 10 August, he sent a memorandum to Marshall in which he wrote that "the next bomb . . should be ready for delivery on the first suitable weather after 17 or 18 August." On the same day, Marshall endorsed the memo with the comment, "It is not to be released over Japan without express authority from the President."
There was already discussion in the War Department about conserving the bombs then in production for Operation Downfall. "The problem now [13 August] is whether or not, assuming the Japanese do not capitulate, to continue dropping them every time one is made and shipped out there or whether to hold them ... and then pour them all on in a reasonably short time. Not all in one day, but over a short period. And that also takes into consideration the target that we are after. In other words, should we not concentrate on targets that will be of the greatest assistance to an invasion rather than industry, morale, psychology, and the like? Nearer the tactical use rather than other use."
Two more Fat Man assemblies were readied. The third core was scheduled to leave Kirtland Field for Tinian on 12 August, and Tibbets was ordered by LeMay to return to Utah to collect it. Robert Bacher was packaging it in Los Alamos when he received word from Groves that the shipment was suspended.
Surrender of Japan and subsequent occupation[edit | edit source]
Until 9 August, the war council had still insisted on its four conditions for surrender. On that day Hirohito ordered Kido to "quickly control the situation... because the Soviet Union has declared war against us." He then held an Imperial conference during which he authorized minister Tōgō to notify the Allies that Japan would accept their terms on one condition, that the declaration "does not compromise any demand which prejudices the prerogatives of His Majesty as a Sovereign ruler."
On 12 August the Emperor informed the imperial family of his decision to surrender. One of his uncles, Prince Asaka, then asked whether the war would be continued if the kokutai could not be preserved. Hirohito simply replied "Of course." As the Allied terms seemed to leave intact the principle of the preservation of the Throne, Hirohito recorded on 14 August his capitulation announcement which was broadcast to the Japanese nation the next day despite a short rebellion by militarists opposed to the surrender.
In his declaration, Hirohito referred to the atomic bombings:
Moreover, the enemy now possesses a new and terrible weapon with the power to destroy many innocent lives and do incalculable damage. Should we continue to fight, not only would it result in an ultimate collapse and obliteration of the Japanese nation, but also it would lead to the total extinction of human civilization.
Such being the case, how are We to save the millions of Our subjects, or to atone Ourselves before the hallowed spirits of Our Imperial Ancestors? This is the reason why We have ordered the acceptance of the provisions of the Joint Declaration of the Powers.
In his "Rescript to the Soldiers and Sailors" delivered on 17 August, he stressed the impact of the Soviet invasion and his decision to surrender, omitting any mention of the bombs.
Depiction, public response and censorship[edit | edit source]
During the war "annihilationist and exterminationalist rhetoric" was tolerated at all levels of U.S. society; according to the UK embassy in Washington the Americans regarded the Japanese as "a nameless mass of vermin". Caricatures depicting Japanese as less than human, e.g. monkeys, were common. A 1944 opinion poll that asked what should be done with Japan found that 13% of the U.S. public were in favor of "killing off" all Japanese: men, women, and children.
After the Hiroshima bomb detonated successfully, Robert Oppenheimer addressed an assembly at Los Alamos "clasping his hands together like a prize-winning boxer". The Vatican was less enthusiastic; its newspaper L'Osservatore Romano expressed regret that the bomb's inventors did not destroy the weapon for the benefit of humanity. Nonetheless, news of the atomic bombing was greeted enthusiastically in the U.S.; a poll in Fortune magazine in late 1945 showed a significant minority of Americans (22.7%) wishing that more atomic bombs could have been dropped on Japan. The initial positive response was supported by the imagery presented to the public (mainly the powerful images of the mushroom cloud) and the censorship of photographs that showed corpses of people incinerated by the blast as well as photos of maimed survivors.
Wilfred Burchett was the first journalist to visit Hiroshima after the atom bomb was dropped, arriving alone by train from Tokyo on 2 September, the day of the formal surrender aboard the USS Missouri. His Morse code dispatch was printed by the Daily Express newspaper in London on September 5, 1945, entitled "The Atomic Plague", the first public report to mention the effects of radiation and nuclear fallout. Burchett's reporting was unpopular with the U.S. military. The U.S. censors suppressed a supporting story submitted by George Weller of the Chicago Daily News, and accused Burchett of being under the sway of Japanese propaganda. Laurence dismissed the reports on radiation sickness as Japanese efforts to undermine American morale, ignoring his own account of Hiroshima's radiation sickness published one week earlier.
A member of the U.S. Strategic Bombing Survey, Lieutenant Daniel McGovern, used a film crew to document the results. The film crew's work resulted in a three-hour documentary entitled The Effects of the Atomic Bombs Against Hiroshima and Nagasaki. The documentary included images from hospitals showing the human effects of the bomb; it showed burned out buildings and cars, and rows of skulls and bones on the ground. When sent to the U.S., it was mentioned widely in the U.S. press, then quietly suppressed and never shown. It was classified "top secret" for the next 22 years. During this time in America, it was a common practice for editors to keep graphic images of death out of films, magazines, and newspapers. The total of 90,000 ft (27,000 m) of film shot by Lieutenant Daniel McGovern's cameramen had not been fully aired as of 2009. However, according to Greg Mitchell, with the 2004 documentary film Original Child Bomb, a small part of that footage managed to reach part of the American public "in the unflinching and powerful form its creators intended".
Motion picture company Nippon Eigasha started sending cameramen to Nagasaki and Hiroshima in September 1945. On October 24, 1945, a U.S. military policeman stopped a Nippon Eigasha cameraman from continuing to film in Nagasaki. All Nippon Eigasha's reels were then confiscated by the American authorities. These reels were in turn requested by the Japanese government, declassified, and saved from oblivion. Some black-and-white motion pictures were released and shown for the first time to Japanese and American audiences in the years from 1968 to 1970. The public release of film footage of the city post attack, and some research about the human effects of the attack, was restricted during the occupation of Japan, and much of this information was censored until the signing of the San Francisco Peace Treaty in 1951, restoring control to the Japanese.
However, worldwide, only the most sensitive, and detailed weapons effects information was censored during this period. There was no censorship of the factually written accounts. For example, the book Hiroshima written by Pulitzer Prize winner John Hersey, which was originally published in article form in the popular magazine The New Yorker, on August 31, 1946. This book is reported to have reached Tokyo, in English, at least by January 1947 and the translated version was released in Japan in 1949. Despite the fact that the article was planned to be published over four issues, "Hiroshima" made up the entire contents of one issue of the magazine. The book narrates the stories of the lives of six bomb survivors from immediately prior, to months after, the dropping of the Little Boy bomb.
Atomic Bomb Casualty Commission[edit | edit source]
In the spring of 1948, the Atomic Bomb Casualty Commission (ABCC) was established in accordance with a presidential directive from Harry S. Truman to the National Academy of Sciences–National Research Council to conduct investigations of the late effects of radiation among the survivors in Hiroshima and Nagasaki. Among the casualties were found many unintended victims, including Allied prisoners of war.
One of the early studies conducted by the ABCC was on the outcome of pregnancies occurring in Hiroshima and Nagasaki, and in a control city, Kure located 18 mi (29 km) south from Hiroshima, in order to discern the conditions and outcomes related to radiation exposure. In 1975, the Radiation Effects Research Foundation was created to assume the responsibilities of ABCC.
Hibakusha[edit | edit source]
The survivors of the bombings are called hibakusha (被爆者), a Japanese word that literally translates to "explosion-affected people." As of March 31, 2013[update], 201,779 hibakusha were recognized by the Japanese government, most living in Japan. The government of Japan recognizes about 1% of these as having illnesses caused by radiation. The memorials in Hiroshima and Nagasaki contain lists of the names of the hibakusha who are known to have died since the bombings. Updated annually on the anniversaries of the bombings, as of August 2013[update] the memorials record the names of almost 450,000 deceased hibakusha; 286,818 in Hiroshima and 162,083 in Nagasaki.
Double survivors[edit | edit source]
People who suffered the effects of both bombings are known as nijū hibakusha in Japan. At least three trains left from Hiroshima and terminated in Nagasaki between August 6 and August 9, each packed with refugees. On March 24, 2009, the Japanese government officially recognized Tsutomu Yamaguchi (1916–2010) as a double hibakusha. He was confirmed to be 3 km (1.9 mi) from ground zero in Hiroshima on a business trip when Little Boy was detonated. He was seriously burnt on his left side and spent the night in Hiroshima. He arrived at his home city of Nagasaki on 8 August, the day before Fat Man was dropped, and he was exposed to residual radiation while searching for his relatives. He was the first officially recognised survivor of both bombings. He died on January 4, 2010, at the age of 93, after a battle with stomach cancer. The 2006 documentary Twice Survived: The Doubly Atomic Bombed of Hiroshima and Nagasaki documented 165 nijū hibakusha, and was screened at the United Nations.
Korean survivors[edit | edit source]
During the war, Japan brought as many as 670,000 Korean conscripts to Japan to work as forced labor. About 20,000 Koreans were killed in Hiroshima and another 2,000 died in Nagasaki. Perhaps one in seven of the Hiroshima victims was of Korean ancestry. For many years, Koreans had a difficult time fighting for recognition as atomic bomb victims and were denied health benefits. However, most issues have been addressed in recent years through lawsuits.
Debate over bombings[edit | edit source]
The atomic bomb was more than a weapon of terrible destruction; it was a psychological weapon.
The role of the bombings in Japan's surrender and the US's ethical justification for them has been the subject of scholarly and popular debate for decades. J. Samuel Walker wrote in an April 2005 overview of recent historiography on the issue, "the controversy over the use of the bomb seems certain to continue." He wrote that "The fundamental issue that has divided scholars over a period of nearly four decades is whether the use of the bomb was necessary to achieve victory in the war in the Pacific on terms satisfactory to the United States."
Supporters of the bombings generally assert that they caused the Japanese surrender, preventing casualties on both sides during Operation Downfall. One figure of speech, "One hundred million [subjects of the Japanese Empire] will die for the Emperor and Nation," served as a unifying slogan, although that phrase was intended as a figure of speech along the lines of the "ten thousand years" phrase. Although some Japanese were taken prisoner, most fought until they were killed or committed suicide. Nearly 99% of the 21,000 defenders of Iwo Jima were killed, and the last Japanese soldiers did not surrender until November 1949. Of the 117,000 Japanese troops defending Okinawa in April–June 1945, 94% were killed. Supporters also point to an order given by the Japanese War Ministry on August 1, 1944, ordering the execution of Allied prisoners of war when the POW-camp was in the combat zone.
War Minister Korechika Anami was opposed to the surrender. Immediately after Hiroshima, he commented, "I am convinced that the Americans had only one bomb, after all." Eventually, Anami's arguments were overcome when Hirohito directly requested an end to the war himself. In Truman's 1955 Memoirs, "he states that the atomic bomb probably saved half a million US lives— anticipated casualties in an Allied invasion of Japan planned for November. Stimson subsequently talked of saving one million US casualties, and Churchill of saving one million American and half that number of British lives." Scholars have pointed out various alternatives that could have ended the war just as quickly without an invasion, but these alternatives could have resulted in the deaths of many more Japanese.
Those who oppose the bombings cite a number of reasons for their view, among them: a belief that atomic bombing is fundamentally immoral, that the bombings counted as war crimes, that they were militarily unnecessary, that they constituted state terrorism, and that they involved racism against and the dehumanization of the Japanese people. Many US military leaders as well as ex-president Herbert Hoover, argue that it was simply an extension of the already fierce conventional bombing campaign, and therefore militarily unnecessary. This, together with the sea blockade and the collapse of Germany (with its implications regarding redeployment), could also have led to a Japanese surrender. As the United States dropped its atomic bomb on Nagasaki on August 9, 1945, Soviet Union launched a surprise attack with 1.6 million troops on the Japanese Kwantung Army in Manchuria. "The Soviet entry into the war played a much greater role than the atomic bombs in inducing Japan to surrender because it dashed any hope that Japan could terminate the war through Moscow's mediation", noted Japanese historian Tsuyoshi Hasegawa.
Legal situation in Japan[edit | edit source]
... (b) that the dropping of atomic bombs as an act of hostilities was illegal under the rules of positive international law (taking both treaty law and customary law into consideration) then in force ... (c) that the dropping of atomic bombs also constituted a wrongful act on the plane of municipal law, ascribable to the United States and its President, Mr. Harry S. Truman;
... The aerial bombardment with atomic bombs of the cities of Hiroshima and Nagasaki was an illegal act of hostilities according to the rules of international law. It must be regarded as indiscriminate aerial bombardment of undefended cities, even if it were directed at military objectives only, inasmuch as it resulted in damage comparable to that caused by indiscriminate bombardment.
Notes[edit | edit source]
- Giangreco 2009, pp. 2–3, 49–51.
- Williams 1960, p. 307.
- Williams 1960, p. 527.
- Long 1963, pp. 48–49.
- Giangreco 2009, pp. 32–34.
- Giangreco 2009, pp. 125–130.
- Giangreco 2009, pp. 169–171.
- Giangreco 2009, pp. 45–48.
- Giangreco 2009, p. 21.
- Giangreco 2009, pp. 70–72.
- Giangreco 2009, pp. 121–124.
- "The Final Months of the War With Japan. Part III (note 24)". Central Intelligence Agency. https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/books-and-monographs/the-final-months-of-the-war-with-japan-signals-intelligence-u-s-invasion-planning-and-the-a-bomb-decision/csi9810001.html#rtoc7.
- Carroll 2007, p. 48.
- Drea 1992, pp. 202–225.
- Giangreco 2009, pp. 98–99.
- Frank 1999, p. 340.
- Giangreco 2009, p. 112.
- "March 9, 1945: Burning the Heart Out of the Enemy". Wired. Condé Nast Digital. March 9, 2011. http://www.wired.com/thisdayintech/2011/03/0309incendiary-bombs-kill-100000-tokyo/. Retrieved August 8, 2011.
- Laurence M. Vance (August 14, 2009). "Bombings Worse than Nagasaki and Hiroshima". The Future of Freedom Foundation. Archived from the original on November 13, 2012. http://wayback.archive.org/web/20121113021343/http://fff.org/comment/com0908j.asp. Retrieved August 8, 2011.
- Joseph Coleman (March 10, 2005). "1945 Tokyo Firebombing Left Legacy of Terror, Pain". CommonDreams.org. http://www.commondreams.org/headlines05/0310-08.htm. Retrieved August 8, 2011.
- Craven & Cate 1953, p. 4.
- Craven & Cate 1953, pp. 22–24.
- Craven & Cate 1953, pp. 169–175.
- Craven & Cate 1953, pp. 29–31.
- Craven & Cate 1953, pp. 507–509.
- Craven & Cate 1953, pp. 514–521.
- Craven & Cate 1953, pp. 548–551.
- Craven & Cate 1953, pp. 536–545.
- Craven & Cate 1953, pp. 558–560.
- Craven & Cate 1953, p. 566.
- Sandler 2001, pp. 24–26.
- Craven & Cate 1953, pp. 574–576.
- Craven & Cate 1953, pp. 568–570.
- Craven & Cate 1953, pp. 608–610.
- Craven & Cate 1953, pp. 614–617.
- Kerr 1991, p. 207.
- Zaloga & Noon 2010, p. 54.
- Zaloga & Noon 2010, pp. 58–59.
- Giangreco 2009, pp. 79–80.
- Roosevelt, Frankin D; Churchill, Winston (August 19, 1943). "Quebec Agreement". atomicarchive.com. http://www.atomicarchive.com/Docs/ManhattanProject/Quebec.shtml.
- Edwards, Gordon. "Canada's Role in the Atomic Bomb Programs of the United States, Britain, France and India". Canadian Coalition for Nuclear Responsibility. Archived from the original on December 13, 2007. http://web.archive.org/web/20071213010316/http://www.ccnr.org/chronology.html. Retrieved December 4, 2007.
- Jones 1985, p. 89.
- Jones 1985, p. 12.
- Jones 1985, pp. 509–510.
- Jones 1985, p. 522.
- Jones 1985, pp. 511–516.
- Jones 1985, pp. 534–536.
- "Factsheets: 509th Operational Group". Air Force Historical Studies Office. http://www.afhra.af.mil/factsheets/factsheet.asp?id=10517. Retrieved December 25, 2011.
- "History of 509th Composite Group – 313th Bombardment Wing – Twentieth Air Force – Activation to August 15, 1945". Tinian: 509th CG (AFHRA archived). 1945. pp. 8–9. http://www.afhra.af.mil/shared/media/document/AFD-080128-037.pdf. Retrieved February 1, 2012.
- "Hiroshima 60 Years Later". Review Journal August 6, 2005. http://www.reviewjournal.com/lvrj_home/2005/Aug-06-Sat-2005/news/26902506.html. Retrieved July 26, 2006.
- "509th Timeline: Inception to Hiroshima". The Atomic Heritage Foundation. http://www.mphpa.org/classic/CG/CG_09C.htm. Retrieved May 5, 2007.
- Krauss & Krauss 2005, p. 1.
- Campbell 2005, pp. 96–99.
- Campbell 2005, pp. 14–23.
- Gordin 2007, pp. 71–74.
- Campbell 2005, p. 25.
- Craven & Cate 1953, p. 706.
- Campbell 2005, p. 100.
- Christman 1998, p. 176.
- "Minutes of 3rd Target Committee Meeting 28 May 1945" (PDF). National Archives. Archived from the original on August 9, 2006. http://web.archive.org/web/20060809093247/http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB162/9.pdf. Retrieved August 9, 2006.
- Jones 1985, pp. 528–529.
- "Atomic Bomb: Decision—Target Committee, May 10–11, 1945". Archived from the original on August 8, 2005. http://web.archive.org/web/20050808014201/http://www.dannen.com/decision/targets.html. Retrieved August 6, 2005.
- Reischauer 1986, p. 101.
- Jones 1985, p. 530.
- "The Information War in the Pacific, 1945". https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/csi-studies/studies/vol46no3/article07.html.
- Frank 1999, p. 153.
- McNelly 2000, p. 138.
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- Lifton, Robert Jay (1987). Death in Life: Survivors of Hiroshima. New York: University of North Carolina Press. ISBN 0-8078-4344-X.
- Long, Gavin (1963) (PDF). The Final Campaigns. Australia in the War of 1939–1945. Series 1 – Army. Volume 7. Canberra: Australian War Memorial. http://www.awm.gov.au/histories/second_world_war/volume.asp?levelID=67909. Retrieved October 31, 2011.
- McNelly, Theodore H. (2000). "The Decision to Drop the Atomic Bomb". In Jacob Neufeld. Pearl Harbor to V-J Day: World War II in the Pacific. New York: Diane Publishing Co.. ISBN 1-4379-1286-9.
- Miller, Richard Lee (1986). Under the Cloud: The Decades of Nuclear Testing. New York: Two-Sixty Press. ISBN 0-02-921620-6.
- Monk, Ray (2012). Robert Oppenheimer: A Life Inside the Center. New York; Toronto: Doubleday. ISBN 978-0-385-50407-2.
- Moore, Mike (July/August 1995). "Troublesome Imagery". Educational Foundation for Nuclear Science. pp. 73–74. ISSN 0096-3402.
- Nichols, Kenneth D. (1987). The Road to Trinity. New York: William Morrow and Company. ISBN 0-688-06910-X.
- Preston, Diana (2005). Before The Fallout: From Marie Curie to Hiroshima. New York: Walker & Co. ISBN 0-8027-1445-5.
- Reischauer, Edwin O. (1986). My Life Between Japan And America. New York: Harper & Row. ISBN 0-06-039054-9. OCLC 13114344.
- Rotter, Andrew J. (2008). Hiroshima: The World's Bomb. Oxford: Oxford University Press. ISBN 0-19-280437-5.
- Russ, Harlow W. (1990). Project Alberta: The Preparation of Atomic Bombs For Use in World War II. Los Alamos, New Mexico: Exceptional Books. ISBN 978-0-944482-01-8. OCLC 24429257.
- Sodei, Rinjiro (1998). Were We the Enemy? American Survivors of Hiroshima. Boulder, Colorado: Westview Press. ISBN 0-8133-2960-4.
- Sandler, Stanley (2001). World War II in the Pacific: an Encyclopedia. New York: Taylor & Francis. ISBN 0-8153-1883-9. OCLC 44769066.
- Selden, Kyoko Iriye; Selden, Mark (1990). The Atomic Bomb: Voices from Hiroshima and Nagasaki. Armonk, New York: M.E. Sharpe. ISBN 0-87332-773-X. OCLC 20057103.
- Sherwin, Martin J. (2003). A World Destroyed: Hiroshima and its Legacies. Stanford, California: Stanford University Press. ISBN 0-8047-3957-9. OCLC 52714712.
- Slavinskiĭ, Boris Nikolaevich (2004). The Japanese-Soviet Neutrality Pact: A Diplomatic History, 1941–1945. Nissan Institute/Routledge Japanese Studies Series. London; New York: RoutledgeCurzon. ISBN 978-0-415-32292-8.
- Stohl, Michael (1979). The Politics of Terrorism. New York: M. Dekker. ISBN 978-0-8247-6764-8. OCLC 4495087.
- Sweeney, Charles; Antonucci, James A.; Antonucci, Marion K. (1997). War's End: An Eyewitness Account of America's Last Atomic Mission. New York: Quill Publishing. ISBN 0-380-78874-8.
- Thomas, Gordon; Morgan-Witts, Max (1977). Ruin from the Air. London: Hamilton. ISBN 0-241-89726-2. OCLC 252041787.
- Towle, Philip; Kosuge, Margaret; Kibata, Yōichi, eds (2000). Japanese Prisoners of War. London: Hambledon Press. ISBN 1-85285-192-9.
- Wainstock, Dennis D. (1996). The Decision to Drop the Atomic Bomb. Westport, Connecticut: Praeger. ISBN 0-275-95475-7. OCLC 33243854.
- Walker, J. Samuel (January 1990). "The Decision to Use the Bomb: A Historiographical Update". pp. 97–114. Digital object identifier:10.1111/j.1467-7709.1990.tb00078.x. ISSN 1467-7709.
- Walker, J. Samuel (April 2005). "Recent Literature on Truman's Atomic Bomb Decision: A Search for Middle Ground". pp. 311–334. Digital object identifier:10.1111/j.1467-7709.2005.00476.x. ISSN 1467-7709. http://onlinelibrary.wiley.com/doi/10.1111/j.1467-7709.2005.00476.x/pdf. Retrieved January 30, 2008.
- White, Geoffrey. M. (July 1995). "Memory Wars: The Politics of Remembering the Asia-Pacific War". ISSN 1522-0966. http://scholarspace.manoa.hawaii.edu/bitstream/handle/10125/3807/api021.pdf?sequence=1. Retrieved June 30, 2013.
- Williams, M. H. (1960). Chronology, 1941–1945. Washington, D.C.: Office of the Chief of Military History, Department of the Army. OCLC 1358166.
- Ward, Wilson (Spring 2007). "The Winning Weapon? Rethinking Nuclear Weapons in Light of Hiroshima". Digital object identifier:10.1162/isec.2007.31.4.162. ISSN 1531-4804.
- Zaloga, Steven J.; Noon, Steve (2010). Defense of Japan 1945. Fortress. Oxford: Osprey Publishing. ISBN 1-84603-687-9. OCLC 503042143.
Further reading[edit | edit source]
There is an extensive body of literature concerning the bombings, the decision to use the bombs, and the surrender of Japan. The following sources provide a sampling of prominent works on this subject matter.
- Allen, Thomas; Polmar, Norman (1995). Code-Name Downfall. New York: Simon & Schuster. ISBN 0-684-80406-9.
- The Committee for the Compilation of Materials on Damage Caused by the Atomic Bombs in Hiroshima and Nagasaki (1981). Hiroshima and Nagasaki: The Physical, Medical, and Social Effects of the Atomic Bombings. New York: Basic Books. ISBN 0-465-02985-X.
- Gosling, Francis George (1994). The Manhattan Project : Making the Atomic Bomb. Washington, D.C.: United States Department of Energy, History Division. OCLC 637052193.
- Hasegawa, Tsuyoshi (2006). Racing the Enemy: Stalin, Truman, and the Surrender of Japan. Cambridge, Massachusetts: The Belknap Press of Harvard University Press. ISBN 978-0-674-01693-4.
- Hogan, Michael J. (1996). Hiroshima in History and Memory. Cambridge, New York: Cambridge University Press. ISBN 0-521-56206-6.
- Merton, Thomas (1962). Original Child Bomb: Points for Meditation to be Scratched on the Walls of a Cave. New York: New Directions. OCLC 4527778.
- Murakami, Chikayasu (2007). Hiroshima no shiroi sora (The White Sky in Hiroshima). Tokyo: Bungeisha. ISBN 4-286-03708-8.
- Ogura, Toyofumi (1948). Letters from the End of the World: A Firsthand Account of the Bombing of Hiroshima. Tokyo: Kodansha International. ISBN 4-7700-2776-1.
- Pellegrino, Charles (2010). The Last Train from Hiroshima: The Survivors Look Back. New York: Henry Holt and Co.. ISBN 978-0-8050-8796-3.
- Sekimori, Gaynor (1986). Hibakusha: Survivors of Hiroshima and Nagasaki. Tokyo: Kosei Publishing Company. ISBN 4-333-01204-X.
- Thomas, Gordon; Morgan-Witts, Max (1977). Enola Gay: The Bombing of Hiroshima. New York: Konecky & Konecky. ISBN 1-56852-597-4.
- Warren, Stafford L. (1966). "Manhattan Project". In Ahnfeldt, Arnold Lorentz. Radiology in World War II. Washington, D.C.: Office of the Surgeon General, Department of the Army. OCLC 630225.
Archives[edit | edit source]
- "Documents on the Decision to Drop the Atomic Bomb". Harry S. Truman Presidential Library and Museum. http://www.trumanlibrary.org/whistlestop/study_collections/bomb/large/index.php. Retrieved January 3, 2012.
- 19, 1946&documentid=65&studycollectionid=abomb&pagenumber=1 "The Effects of the Atomic Bombings of Hiroshima and Nagasaki". U.S. Strategic Bombing Survey. Harry S. Truman Presidential Library and Museum. 1946. http://www.trumanlibrary.org/whistlestop/study_collections/bomb/large/documents/index.php?documentdate=June 19, 1946&documentid=65&studycollectionid=abomb&pagenumber=1. Retrieved January 3, 2012.
- President Truman on the Bombing of Japan, 1945:Original Letters Shapell Manuscript Foundation
- "Scientific Data of the Nagasaki Atomic Bomb Disaster". Atomic Bomb Disease Institute, Nagasaki University. http://www-sdc.med.nagasaki-u.ac.jp/n50/start-E.html. Retrieved January 3, 2012.
- "Correspondence Regarding Decision to Drop the Bomb". Nuclear Age Peace Foundation. http://www.nuclearfiles.org/menu/library/correspondence/index.htm#decision. Retrieved January 3, 2012.
- "Tale of Two Cities: The Story of Hiroshima and Nagasaki". National Science Digital Library. http://www.atomicarchive.com/History/twocities/index.shtml. Retrieved January 3, 2012.
- "The Atomic Bombings of Hiroshima and Nagasaki". Manhattan Project, U.S. Army. 1946. http://www.atomicarchive.com/Docs/MED/index.shtml. Retrieved January 3, 2012.
- "The Atomic Bomb and the End of World War II". National Security Archive. http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB162/72.pdf. Retrieved January 3, 2012.
- "Nagasaki Archive". Google Earth mapping of Nagasaki bombing archives. http://e.nagasaki.mapping.jp/p/nagasaki-archive.html. Retrieved January 3, 2012.
- "Hiroshima Archive". Google Earth mapping of Hiroshima bombing archives. http://hiroshima.mapping.jp/. Retrieved January 3, 2012.
- "Annotated bibliography for atomic bombings of Hiroshima and Nagasaki". Alsos Digital Library for Nuclear Issues. http://alsos.wlu.edu/adv_rst.aspx?keyword=use*atomic*bombs*japan&creator=&title=&media=all&genre=all&disc=all&level=all&sortby=relevance&results=10&period=15. Retrieved January 3, 2012.
- The short film Children of Hiroshima (Reel 1 of 2) (1952) is available for free download at the Internet Archive [more]
- The short film Children of Hiroshima (Reel 2 of 2) (1952) is available for free download at the Internet Archive [more]
- Photo gallery of aftermath pictures by Time-Life
Commemoration[edit | edit source]
- An Unrecognized Loss – Message From Hiroshima (film)
- Hiroshima National Peace Memorial Hall For The Atomic Bomb Victims
- Nagasaki National Peace Memorial Hall For The Atomic Bomb Victims
- Hiroshima Peace Memorial Museum
- Hiroshima and Nagasaki: A Look Back at the US Atomic Bombing 64 Years Later – video by Democracy Now!
- Hiroshima & Nagasaki Remembered 2005 website commemorating 60th anniversary
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