174-582: Second Sino-Japanese War On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki , respectively. The bombings killed between 150,000 and 246,000 people, most of whom were civilians, and remain the only use of nuclear weapons in an armed conflict. Japan surrendered to the Allies on 15 August, six days after the bombing of Nagasaki and
348-730: A full-scale battle in which Beijing and its port city of Tianjin fell to invading Japanese forces (July–August 1937). , On 11 July, in accordance with the Goso conference, the Imperial Japanese Army General Staff authorized the deployment of an infantry division from the Chōsen Army , two combined brigades from the Kwantung Army and an air regiment composed of 18 squadrons as reinforcements to Northern China. By 20 July, total Japanese military strength in
522-524: A war of aggression , or a war in violation of international treaties, agreements, or assurances. Because the definition of a state of "war" may be debated, the term "war crime" itself has seen different usage under different systems of international and military law. It has some degree of application outside of what some may consider being a state of "war", but in areas where conflicts persist enough to constitute social instability. The legalities of war have sometimes been accused of containing favoritism toward
696-507: A "composite" rather than a "bombardment" unit. Due to its remoteness, Tibbets selected Wendover for his training base over Great Bend, Kansas and Mountain Home, Idaho . Each bombardier completed at least 50 practice drops of inert or conventional explosive pumpkin bombs , targeting islands around Tinian and later the Japanese home islands, until as late as 14 August 1945. Some of the missions over Japan were flown by single unescorted bombers with
870-616: A Little Boy was dropped on Hiroshima. Three days later, a Fat Man was dropped on Nagasaki. Over the next two to four months, the effects of the atomic bombings killed 90,000 to 166,000 people in Hiroshima and 60,000 to 80,000 people in Nagasaki; roughly half occurred on the first day. For months afterward, many people continued to die from the effects of burns, radiation sickness , and other injuries, compounded by illness and malnutrition. Despite Hiroshima's sizable military garrison, most of
1044-675: A campaign of sabotage and guerrilla warfare . In November 1939, Chinese nationalist forces launched a large scale winter offensive , and in August 1940, communist forces launched the Hundred Regiments Offensive in central China. In December 1941, Japan launched a surprise attack on Pearl Harbor and declared war on the United States. The US increased its aid to China under the Lend-Lease Act , becoming its main financial and military supporter. With Burma cut off,
1218-540: A communist victory and the Proclamation of the People's Republic of China in 1949. In China, the war is most commonly known as the "War of Resistance against Japanese Aggression" ( simplified Chinese : 抗日战争 ; traditional Chinese : 抗日戰爭 ), and shortened to "Resistance against Japanese Aggression" ( Chinese : 抗日 ) or the "War of Resistance" (simplified Chinese: 抗战 ; traditional Chinese: 抗戰 ). It
1392-719: A demilitarized zone between the Great Wall and Beijing-Tianjin region. Japan aimed to create another buffer zone between Manchukuo and the Chinese Nationalist government in Nanjing. Japan increasingly exploited China's internal conflicts to reduce the strength of its fractious opponents. Even years after the Northern Expedition, the political power of the Nationalist government was limited to just
1566-523: A duty to prevent" criminal behaviour by a military force. Despite having argued that he had obeyed superior orders , von Hagenbach was convicted, condemned to death , and beheaded. The Hague Conventions were international treaties negotiated at the First and Second Peace Conferences at The Hague , Netherlands, in 1899 and 1907, respectively, and were, along with the Geneva Conventions, among
1740-646: A greater loss of life; according to critics, the bombings were unnecessary for the war's end and were a war crime , raising moral and ethical implications. In 1945, the Pacific War between the Empire of Japan and the Allies entered its fourth year. Most Japanese military units fought fiercely, ensuring that the Allied victory would come at an enormous cost. The 1.25 million battle casualties incurred in total by
1914-492: A large fraction of the city may be destroyed. 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 U.S. 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
SECTION 10
#17327764983842088-422: A large war industry, manufacturing parts for planes and boats, for bombs, rifles, and handguns. The center of the city contained several reinforced concrete buildings. Outside the center, the area was congested by a dense collection of small timber workshops set among Japanese houses. A few larger industrial plants lay near the outskirts of the city. The houses were constructed of timber with tile roofs, and many of
2262-658: A legal basis and framework for the conduct of war under international law. Every single member state of the United Nations has currently ratified the conventions, which are universally accepted as customary international law , applicable to every situation of armed conflict in the world. The Additional Protocols to the Geneva Conventions adopted in 1977 containing the most pertinent, detailed and comprehensive protections of international humanitarian law for persons and objects in modern warfare are still not ratified by several states continuously engaged in armed conflicts, namely
2436-529: A meeting with the President and commanders on 18 June 1945, General George C. Marshall stated that "there was reason to believe" casualties for the first 30 days would not exceed the price paid for Luzon . Additionally, with the Japanese position rendered "hopeless" by an invasion of their mainland, Marshall speculated that Soviet entry into the war might be "the decisive action" needed to finally "[leverage] them into capitulation." Marshall began contemplating
2610-480: A military objective are governed under principles such as of proportionality and military necessity and can be permissible. Military necessity "permits the destruction of life of ... persons whose destruction is incidentally unavoidable by the armed conflicts of the war; ... it does not permit the killing of innocent inhabitants for purposes of revenge or the satisfaction of a lust to kill. The destruction of property to be lawful must be imperatively demanded by
2784-551: 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 U.S. occupation headquarters, others thought perhaps their relatives in Hawaii and California had petitioned
2958-474: A plan or policy or as part of a large-scale commission of such crimes". To date, the present and former heads of state and heads of government that have been charged with war crimes include: War crimes are serious violations of the rules of customary and treaty law concerning international humanitarian law , criminal offenses for which there is individual responsibility. Colloquial definitions of war crime include violations of established protections of
3132-589: A press conference that the Potsdam Declaration was no more than a rehash ( yakinaoshi ) of the Cairo Declaration , that the government intended to ignore it ( mokusatsu , "kill by silence"), and that Japan would fight to the end. 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
3306-504: A request from Winston Churchill that Britain be represented when the atomic bomb was dropped. William Penney and Group Captain Leonard Cheshire were sent to Tinian, but LeMay would not let them accompany the mission. The Little Boy bomb, except for the uranium payload, was ready at the beginning of May 1945. There were two uranium-235 components, a hollow cylindrical projectile and a cylindrical target insert. The projectile
3480-732: A result of Depression -era tariffs ), and a protective buffer state against the Soviet Union in Siberia . As a result, the Japanese Army was widely prevalent in Manchuria immediately following the Japanese victory in the Russo-Japanese War in 1905, where Japan gained significant territory in Manchuria. As a result of their strengthened position, by 1915 Japan had negotiated a significant amount of economic privilege in
3654-536: A result of its victory at the end of the war. Japan had also attempted to annex the Liaodong Peninsula following the war, though was forced to return it to China following an intervention by France , Germany , and Russia . The Qing dynasty was on the brink of collapse due to internal revolts and the imposition of the unequal treaties , while Japan had emerged as a great power through its modernization measures. In 1905, Japan successfully defeated
SECTION 20
#17327764983843828-543: A series of landings by the U.S. Sixth Army intended to capture the southern third of the southernmost main Japanese island, Kyūshū . This was to be followed in March 1946 by Operation Coronet , the capture of the Kantō Plain , near Tokyo on the main Japanese island of Honshū by the U.S. First , Eighth and Tenth Armies, as well as a Commonwealth Corps made up of Australian, British and Canadian divisions. The target date
4002-463: A series of raids on strategic targets in Japan. This effort failed to achieve the strategic objectives that its 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. Brigadier General Haywood S. Hansell determined that Guam , Tinian , and Saipan in
4176-411: A single payload to accustom the Japanese to this pattern. They also simulated actual atomic bombing runs, including the directions of ingress and egress with respect to the wind. Tibbets himself was barred from flying most missions over Japan for fear that he might be captured and interrogated. On 5 April 1945, the code name Operation Centerboard was assigned. The officer responsible for its allocation in
4350-687: A study by the Joint War Plans Committee, drawing on the experience of the Battle of Leyte , estimated that Downfall would result in 132,500 to 220,000 U.S. casualties, with U.S. dead and missing in the range from 27,500 to 50,000. Secretary of War Henry L. Stimson commissioned his own study by Quincy Wright and William Shockley , who estimated the invading Allies would suffer between 1.7 and 4 million casualties, of whom between 400,000 and 800,000 would be dead, while Japanese fatalities would have been around 5 to 10 million. In
4524-779: A term used mainly in foreign and Chinese narratives. The origins of the Second Sino-Japanese War can be traced back to the First Sino-Japanese War of 1894–1895, in which China, then under the rule of the Qing dynasty, was defeated by Japan and forced to cede Taiwan and recognize the full and complete independence of Korea in the Treaty of Shimonoseki . Japan also annexed the Senkaku Islands , which Japan claims were uninhabited, in early 1895 as
4698-648: A testing zone for advanced biplane and new-generation monoplane combat-aircraft designs. The introduction of the advanced A5M "Claude" fighters into the Shanghai-Nanjing theater of operations, beginning on 18 September 1937, helped the Japanese achieve a certain level of air superiority . However the few experienced Chinese veteran pilots, as well as several Chinese-American volunteer fighter pilots, including Maj. Art Chin , Maj. John Wong Pan-yang , and Capt. Chan Kee-Wong, even in their older and slower biplanes, proved more than able to hold their own against
4872-622: 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. Extant sources show that while Stimson was personally familiar with Kyoto, this was the result of a visit decades after his marriage, not because he honeymooned there. On 30 May, Stimson asked Groves to remove Kyoto from the target list due to its historical, religious and cultural significance, but Groves pointed to its military and industrial significance. Stimson then approached President Harry S. Truman about
5046-529: Is a legitimate ruse of war , though fighting in combat or assassinating individuals behind enemy lines while so disguised is not, as it constitutes unlawful perfidy . Attacking enemy troops while they are being deployed by way of a parachute is not a war crime. Protocol I, Article 42 of the Geneva Conventions explicitly forbids attacking parachutists who eject from disabled aircraft and surrendering parachutists once landed. Article 30 of
5220-520: Is a period of "total" war. This view of a fourteen-year war has political significance because it provides more recognition for the role of northeast China in the War of Resistance. On the night of 7 July 1937, Chinese and Japanese troops exchanged fire in the vicinity of the Marco Polo (or Lugou) Bridge , a crucial access-route to Beijing. What began as confused, sporadic skirmishing soon escalated into
5394-419: Is called scorched earth policy for the military purpose of denying the use of ground for the enemy. The German troops retreating from Finnish Lapland believed Finland would be occupied by Soviet troops and destroyed many settlements while retreating to Norway under the command of Rendulic. He overestimated the perceived risk but argued that Hague IV authorized the destruction because it was necessary to war. He
Atomic bombings of Hiroshima and Nagasaki - Misplaced Pages Continue
5568-895: Is known in China as the War of Resistance against Japanese Aggression ( simplified Chinese : 抗日战争 ; traditional Chinese : 抗日戰爭 ). On 18 September 1931, the Japanese staged the Mukden incident , a false flag event fabricated to justify their invasion of Manchuria and establishment of the puppet state of Manchukuo . This is sometimes marked as the beginning of the war. From 1931 to 1937, China and Japan engaged in skirmishes, including in Shanghai and in Northern China. Chinese Nationalist and Communist forces, respectively led by Chiang Kai-shek and Mao Zedong , had fought each other in
5742-569: Is most commonly used because of its perceived objectivity. When the invasion of China proper began in earnest in July 1937 near Beijing , the government of Japan used "The North China Incident" (Japanese: 北支事變/華北事變 , romanized: Hokushi Jihen/Kahoku Jihen ), and with the outbreak of the Battle of Shanghai the following month, it was changed to "The China Incident" (Japanese: 支那事變 , romanized: Shina Jihen ). The word "incident" (Japanese: 事變 , romanized: jihen )
5916-472: Is part of the command structure who orders any attempt to committing mass killings including genocide or ethnic cleansing , the granting of no quarter despite surrender, the conscription of children in the military and flouting the legal distinctions of proportionality and military necessity . The formal concept of war crimes emerged from the codification of the customary international law that applied to warfare between sovereign states , such as
6090-415: 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 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
6264-569: Is unlawful. For aerial strikes, pilots generally have to rely on information supplied by external sources (headquarters, ground troops) that a specific position is in fact a military target. In the case of former Yugoslavia , NATO pilots hit a civilian object (the Chinese embassy in Belgrade ) that was of no military significance, but the pilots had no idea of determining it aside from their orders. The committee ruled that "the aircrew involved in
6438-657: The Central Plains War broke out across China, involving regional commanders who had fought in alliance with the Kuomintang during the Northern Expedition, and the Nanjing government under Chiang. The Chinese Communist Party (CCP) previously fought openly against the Nanjing government after the Shanghai massacre of 1927 , and they continued to expand during this protracted civil war. The Kuomintang government in Nanjing decided to focus their efforts on suppressing
6612-667: The Chinese Civil War since 1927. In late 1933, Chiang Kai-shek encircled the Chinese Communists in an attempt to finally destroy them, forcing the Communists into the Long March , resulting in the Communists losing around 90% of their men. As a Japanese invasion became imminent, Chiang still refused to form a united front before he was placed under house arrest by his subordinates who forced him to form
6786-679: The Combined Policy Committee , which included one Canadian representative, was held at the Pentagon on 4 July 1945. Field Marshal Sir Henry Maitland Wilson announced that the British government concurred with the use of nuclear weapons against Japan, which would be officially recorded as a decision of the Combined Policy Committee. As the release of information to third parties was also controlled by
6960-542: The Einstein–Szilard letter to Roosevelt in 1939. This prompted preliminary research in the United States in late 1939. Progress was slow until the arrival of the British MAUD Committee report in late 1941, which indicated that only 5 to 10 kilograms of isotopically -pure uranium-235 were needed for a bomb instead of tons of natural uranium and a neutron moderator like heavy water . Consequently,
7134-818: The German Empire 's sphere of influence in Shandong province, leading to nationwide anti-Japanese protests and mass demonstrations in China. The country remained fragmented under the Beiyang Government and was unable to resist foreign incursions. For the purpose of unifying China and defeating the regional warlords, the Kuomintang (KMT) in Guangzhou launched the Northern Expedition from 1926 to 1928 with limited assistance from
Atomic bombings of Hiroshima and Nagasaki - Misplaced Pages Continue
7308-558: The Interim Committee was created by Stimson at the urging of leaders of the Manhattan Project and with the approval of Truman to advise on matters pertaining to nuclear technology . They agreed that the atomic bomb was to be used (1) against Japan at the earliest opportunity, (2) without special warning, and (3) on a "dual target" of military installation surrounded by other buildings susceptible to damage. During
7482-939: The Lieber Code (1863) of the Union Army in the American Civil War and the Hague Conventions of 1899 and 1907 for international war. In the aftermath of the Second World War, the war-crime trials of the leaders of the Axis powers established the Nuremberg principles of law, such as that international criminal law defines what is a war crime. In 1949, the Geneva Conventions legally defined new war crimes and established that states could exercise universal jurisdiction over war criminals. In
7656-581: 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. The XXI Bomber Command began missions against Japan on 18 November 1944. The early attempts to bomb Japan from
7830-855: The Mukden incident in September 1931. Japanese soldiers set off a bomb on the Southern Manchurian Railroad in order to provoke an opportunity to act in "self defense" and invade outright. Japan charged that its rights in Manchuria, which had been established as a result of its victory in 1905 at the end of the Russo-Japanese War , had been systematically violated and there were "more than 120 cases of infringement of rights and interests, interference with business, boycott of Japanese goods, unreasonable taxation, detention of individuals, confiscation of properties, eviction, demand for cessation of business, assault and battery, and
8004-578: The Neutrality Acts of the 1930s . In addition, due to China's fractured political status, Japan often claimed that China was no longer a recognizable political entity on which war could be declared. In Japanese propaganda , the invasion of China became a crusade (Japanese: 聖戦 , romanized: seisen ), the first step of the "eight corners of the world under one roof" slogan (Japanese: 八紘一宇 , romanized: Hakkō ichiu ). In 1940, Japanese Prime Minister Fumimaro Konoe launched
8178-880: The Nuremberg Trials and Tokyo Trials have been convened. Recent examples are the International Criminal Tribunal for the Former Yugoslavia and the International Criminal Tribunal for Rwanda , which were established by the UN Security Council acting under Chapter VIII of the UN Charter . Under the Nuremberg Principles , war crimes are different from crimes against peace . Crimes against peace include planning, preparing, initiating, or waging
8352-411: The Russian Empire in the Russo-Japanese War , gaining Tailen and southern Sakhalin and establishing a protectorate over Korea. In 1911, factions of the Qing Army uprose against the government, staging a revolution that swept across China's southern provinces. The Qing responded by appointing Yuan Shikai , commander of the loyalist Beiyang Army , as temporary prime minister in order to subdue
8526-444: The Second United Front in late 1936 in order to resist the Japanese invasion together. The full-scale war began on 7 July 1937 with the Marco Polo Bridge incident near Beijing , which prompted a full-scale Japanese invasion of the rest of China. The Japanese captured the capital of Nanjing in 1937 and perpetrated the Nanjing Massacre . After failing to stop the Japanese capture of Wuhan in 1938, then China's de facto capital at
8700-427: The Shanghai French Concession , areas which were outside of China's control due to the treaty port system. Japan moved into these areas after its 1941 declaration of war against the United States and the United Kingdom. Building on the hard-won victory in Shanghai, the IJA advanced on and captured the KMT capital city of Nanjing (December 1937) and Northern Shanxi (September – November 1937). Upon
8874-435: The Soviet Union . The National Revolutionary Army (NRA) formed by the Kuomintang swept through southern and central China until it was checked in Shandong, where confrontations with the Japanese garrison escalated into armed conflict. The conflicts were collectively known as the Jinan incident of 1928, during which time the Japanese military killed several Chinese officials and fired artillery shells into Jinan. According to
SECTION 50
#17327764983849048-484: The Soviet Union's declaration of war against Japan and invasion of Japanese-occupied Manchuria . The Japanese government signed the instrument of surrender on 2 September, effectively ending the war . In the final year of World War II , the Allies prepared for a costly invasion of the Japanese mainland . This undertaking was preceded by a conventional bombing and firebombing campaign that devastated 64 Japanese cities, including an operation on Tokyo . The war in
9222-556: The Taisei Yokusankai . When both sides formally declared war in December 1941, the name was replaced by " Greater East Asia War " (Japanese: 大東亞戰爭 , romanized: Daitōa Sensō ). Although the Japanese government still uses the term "China Incident" in formal documents, the word Shina is considered derogatory by China and therefore the media in Japan often paraphrase with other expressions like "The Japan–China Incident" (Japanese: 日華事變/日支事變 , romanized: Nikka Jiken/Nisshi Jiken ), which were used by media as early as
9396-563: The U.N. Security Council adopted Resolution 1820 , which noted that "rape and other forms of sexual violence can constitute war crimes, crimes against humanity or a constitutive act with respect to genocide"; see also wartime sexual violence . In 2016, the International Criminal Court convicted someone of sexual violence for the first time; specifically, they added rape to a war crimes conviction of Congo Vice President Jean-Pierre Bemba Gombo . War crimes also included deliberate attacks on citizens and property of neutral states , such as
9570-516: The United States Army Air Forces airlifted material over the Himalayas . In 1944, Japan launched Operation Ichi-Go , the invasion of Henan and Changsha . In 1945, the Chinese Expeditionary Force resumed its advance in Burma and completed the Ledo Road linking India to China. China launched large counteroffensives in South China and repulsed a failed Japanese invasion of West Hunan and recaptured Japanese occupied regions of Guangxi . Japan formally surrendered on 2 September 1945, following
9744-482: The War Department 's Operations Division was not cleared to know any details of it. The first bombing was later codenamed Operation Centerboard I, and the second, Operation Centerboard II. The 509th Composite Group had an authorized strength of 225 officers and 1,542 enlisted men, almost all of whom eventually deployed to Tinian. In addition to its authorized strength, the 509th had attached to it on Tinian 51 civilian and military personnel from Project Alberta , known as
9918-442: The atomic bombings of Hiroshima and Nagasaki , Soviet declaration of war and subsequent invasions of Manchukuo and Korea . The war resulted in the deaths of around 20 million people, mostly Chinese civilians. China was recognized as one of the Big Four Allies , regained all territories lost, and became one of the five permanent members of the United Nations Security Council . The Chinese Civil War resumed in 1946, ending with
10092-504: The laws of war , but also include failures to adhere to norms of procedure and rules of battle, such as attacking those displaying a peaceful flag of truce , or using that same flag as a ruse to mount an attack on enemy troops. The use of chemical and biological weapons in warfare are also prohibited by numerous chemical arms control agreements and the Biological Weapons Convention . Wearing enemy uniforms or civilian clothes to infiltrate enemy lines for espionage or sabotage missions
10266-562: The "Lieber Code." A small number of German military personnel of the First World War were tried in 1921 by the German Supreme Court for alleged war crimes. The modern concept of war crime was further developed under the auspices of the Nuremberg trials based on the definition in the London Charter that was published on August 8, 1945 (see Nuremberg principles ). Along with war crimes the charter also defined crimes against peace and crimes against humanity , which are often committed during wars and in concert with war crimes. Also known as
10440-430: The 18 September 1931 Japanese invasion of Manchuria marks the start of the War of Resistance. Although not the conventional Western view, British historian Rana Mitter describes this Chinese trend of historical analysis as "perfectly reasonable". In 2017, the Chinese government officially announced that it would adopt this view. Under this interpretation, the 1931–1937 period is viewed as the "partial" war, while 1937–1945
10614-650: The 1907 Hague Convention IV – The Laws and Customs of War on Land explicitly forbids belligerents to punish enemy spies without previous trial . The rule of war, also known as the Law of Armed Conflict , permits belligerents to engage in combat. A war crime occurs when superfluous injury or unnecessary suffering is inflicted upon an enemy. War crimes also include such acts as mistreatment of prisoners of war or civilians . War crimes are sometimes part of instances of mass murder and genocide though these crimes are more broadly covered under international humanitarian law described as crimes against humanity . In 2008,
SECTION 60
#173277649838410788-417: The 1921 and 1927 Imperial Eastern Region Conferences reconfirmed Japan's commitment to be the dominant power in the Northeast. The 1929 Red Army victory shook that policy to the core and reopened the Manchurian problem. By 1930, the Kwantung Army realized they faced a Red Army that was only growing stronger. The time to act was drawing near and Japanese plans to conquer the Northeast were accelerated. In 1930,
10962-401: The 1930s. The name "Second Sino-Japanese War" is not commonly used in Japan as the China it fought a war against in 1894 to 1895 was led by the Qing dynasty , and thus is called the Qing-Japanese War (Japanese: 日清戦争 , romanized: Nisshin–Sensō ), rather than the First Sino-Japanese War . Another term for the second war between Japan and China is the "Japanese invasion of China",
11136-454: The 1931 Japanese invasion of Manchuria . According to historian Rana Mitter , historians in China are unhappy with the blanket revision, and (despite sustained tensions) the Republic of China did not consider itself to be in an ongoing war with Japan over these six years. It is also referred to as part of the "Global Anti-Fascist War". In Japan, nowadays, the name "Japan–China War" ( Japanese : 日中戦争 , romanized : Nitchū Sensō )
11310-399: The 1937 " Sword March ", which—with slightly reworked lyrics—became the National Revolutionary Army's standard marching cadence and popularized the racial epithet guizi to describe the Japanese invaders. The Imperial General Headquarters (GHQ) in Tokyo, content with the gains acquired in northern China following the Marco Polo Bridge Incident, initially showed reluctance to escalate
11484-413: The 1st Technical Detachment. The 509th Composite Group's 393d Bombardment Squadron was equipped with 15 Silverplate B-29s. These aircraft were specially adapted to carry nuclear weapons, and were equipped with fuel-injected engines, Curtiss Electric reversible-pitch propellers , pneumatic actuators for rapid opening and closing of bomb bay doors and other improvements. The ground support echelon of
11658-440: The 393d Bombardment Squadron plus one from the 216th Army Air Force Base Unit, and transported to North Field, arriving on 2 August. At the time of its bombing, Hiroshima was a city of 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
11832-419: 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, an estimated 40,000 Japanese military personnel were stationed in the city. Hiroshima was a supply and logistics base for the Japanese military. The city was a communications center, a key port for shipping, and an assembly area for troops. It supported
12006-421: The 509th Composite Group about the possibility of a B-29 crashing on takeoff, Birch had modified the Little Boy design to incorporate a removable breech plug that would permit the bomb to be armed in flight. The first plutonium core , along with its polonium - beryllium urchin initiator , was transported in the custody of Project Alberta courier Raemer Schreiber in a magnesium field carrying case designed for
12180-407: The 509th Composite Group moved by rail on 26 April 1945, to its port of embarkation at Seattle , Washington. On 6 May the support elements sailed on the SS Cape Victory for the Marianas, while group materiel was shipped on the SS Emile Berliner . The Cape Victory made brief port calls at Honolulu and Eniwetok but the passengers were not permitted to leave the dock area. An advance party of
12354-403: The Allies advanced towards Japan, conditions became steadily worse for the Japanese people. Japan's merchant fleet declined from 5,250,000 gross register tons in 1941 to 1,560,000 tons in March 1945, and 557,000 tons in August 1945. The lack of raw materials forced the Japanese war economy into a steep decline after the middle of 1944. The civilian economy, which had slowly deteriorated throughout
12528-600: The Beijing-Tianjin area exceeded 180,000 personnel. The Japanese gave Sung and his troops "free passage" before moving in to pacify resistance in areas surrounding Beijing (then Beiping) and Tianjin. After 24 days of combat, the Chinese 29th Army was forced to withdraw. The Japanese captured Beijing and the Taku Forts at Tianjin on 29 and 30 July respectively, thus concluding the Beijing-Tianjin campaign. However,
12702-586: The Blitz as well as the indiscriminate attacks on Allied cities with V-1 flying bombs and V-2 rockets , nor the Japanese for the aerial attacks on crowded Chinese cities. Controversy arose when the Allies re-designated German POWs (under the protection of the 1929 Geneva Convention on Prisoners of War ) as Disarmed Enemy Forces (allegedly unprotected by the 1929 Geneva Convention on Prisoners of War), many of which were then used for forced labor such as clearing minefields . By December 1945, six months after
12876-474: The Chinese Communists through the Encirclement Campaigns , following the policy of "first internal pacification, then external resistance" (Chinese: 攘外必先安內 ). The internecine warfare in China provided excellent opportunities for Japan, which saw Manchuria as a limitless supply of raw materials, a market for its manufactured goods (now excluded from the markets of many Western countries as
13050-628: The Chinese to deploy troops in their own city. In Manchukuo there was an ongoing campaign to pacify the Anti-Japanese Volunteer Armies that arose from widespread outrage over the policy of non-resistance to Japan. On 15 April 1932, the Chinese Soviet Republic led by the Communists declared war on Japan. In 1933, the Japanese attacked the Great Wall region. The Tanggu Truce established in its aftermath, gave Japan control of Rehe Province , as well as
13224-558: The European theatre concluded when Germany surrendered on 8 May 1945, and the Allies turned their full attention to the Pacific War . By July 1945, the Allies' Manhattan Project had produced two types of atomic bombs: " Little Boy ", an enriched uranium gun-type fission weapon , and " Fat Man ", a plutonium implosion-type nuclear weapon . The 509th Composite Group of the United States Army Air Forces
13398-883: The Field (Lieber Code) was written by Franz Lieber , a German lawyer , political philosopher , and veteran of the Napoleonic Wars . Lincoln made the Code military law for all wartime conduct of the Union Army . It defined command responsibility for war crimes and crimes against humanity as well as stated the military responsibilities of the Union soldier fighting the Confederate States of America . The Geneva Conventions are four related treaties adopted and continuously expanded from 1864 to 1949 that represent
13572-482: The Japanese attack on Pearl Harbor . As the attack on Pearl Harbor happened while the U.S. and Japan were at peace and without a just cause for self-defense, the attack was declared by the Tokyo Trials to go beyond justification of military necessity and therefore constituted a war crime. War crimes are significant in international humanitarian law because it is an area where international tribunals such as
13746-605: The Japanese Army had been given orders not to advance further than the Yongding River. In a sudden volte-face , the Konoe government's foreign minister opened negotiations with Chiang Kai-shek's government in Nanjing and stated: "Japan wants Chinese cooperation, not Chinese land." Nevertheless, negotiations failed to move further. The Ōyama Incident on 9 August escalated the skirmishes and battles into full scale warfare. The 29th Army's resistance (and poor equipment) inspired
13920-465: The Japanese intercepted most of the attack with A2N and A4N fighters from the aircraft carriers Hosho and Ryujo , shooting down several of the Chinese planes while losing a single A4N in the dogfight with Lt. Huang Xinrui in his P-26/281; the Japanese Army reinforcements succeeded in landing in northern Shanghai. The Imperial Japanese Army (IJA) ultimately committed over 300,000 troops, along with numerous naval vessels and aircraft, to capture
14094-630: The Japanese strongholds in Shanghai, leading to bitter street fighting. In an attack on the Japanese cruiser Izumo , Kuomintang planes accidentally bombed the Shanghai International Settlement , which led to more than 3,000 civilian deaths. In the three days from 14 August through 16, 1937, the Imperial Japanese Navy (IJN) sent many sorties of the then-advanced long-ranged G3M medium-heavy land-based bombers and assorted carrier-based aircraft with
14268-644: The Japanese-backed East Hebei Autonomous Council and the Hebei–Chahar Political Council were established. There in the empty space of Chahar the Mongol military government was formed on 12 May 1936. Japan provided all the necessary military and economic aid. Afterwards Chinese volunteer forces continued to resist Japanese aggression in Manchuria, and Chahar and Suiyuan . Some Chinese historians believe
14442-645: The League of Nations. No country took action against Japan beyond tepid censure. From 1931 until summer 1937, the Nationalist Army under Chiang Kai-shek did little to oppose Japanese encroachment into China. Incessant fighting followed the Mukden Incident. In 1932, Chinese and Japanese troops fought the January 28 Incident battle. This resulted in the demilitarization of Shanghai , which forbade
14616-467: The Manhattan Project took place at dozens of sites across the United States, and even some outside of its borders. It would ultimately cost over US$ 2 billion (equivalent to about $ 27 billion in 2023) and employ over 125,000 people simultaneously at its peak. Groves appointed J. Robert Oppenheimer to organize and head the project's Los Alamos Laboratory in New Mexico , where bomb design work
14790-498: The Manhattan Project. The Target Committee met in Washington on 27 April; at Los Alamos on 10 May, where it was able to talk to the scientists and technicians there; and finally in Washington on 28 May, 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 five targets: Kokura (now Kitakyushu ),
14964-716: 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 , aimed at key industries and transportation networks, 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 enemy action. Hansell's successor, Major General Curtis LeMay , assumed command in January 1945 and initially continued to use
15138-574: The Pacific, the Allies returned to the Philippines , recaptured Burma , and invaded Borneo . 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 five to one in
15312-462: The Philippines to two to one on Okinawa. Although some Japanese soldiers were taken prisoner , most fought until they were killed or committed suicide . Nearly 99 percent of the 21,000 defenders of Iwo Jima were killed. Of the 117,000 Okinawan and Japanese troops defending Okinawa in April to June 1945, 94 percent were killed; 7,401 Japanese soldiers surrendered, an unprecedentedly large number. As
15486-568: The Quebec Agreement, discussion then turned to what scientific details would be revealed in the press announcement of the bombing. The meeting also considered what Truman could reveal to Joseph Stalin , the leader of the Soviet Union , at the upcoming Potsdam Conference , as this also required British concurrence. Orders for the attack were issued to General Carl Spaatz on 25 July under the signature of General Thomas T. Handy ,
15660-818: The Tokyo Trial, the Tokyo War Crimes Tribunal or simply as the Tribunal, it was convened on May 3, 1946, to try the leaders of the Empire of Japan for three types of crimes: "Class A" (crimes against peace), "Class B" (war crimes), and "Class C" (crimes against humanity), committed during World War II . On July 1, 2002, the International Criminal Court (ICC), a treaty-based court located in The Hague , came into being for
15834-588: The U.S. government to avoid bombing Hiroshima. More realistic city officials had ordered buildings torn down to create long, straight firebreaks . These continued to be expanded and extended up to the morning of 6 August 1945. Second Sino-Japanese War [REDACTED] China [REDACTED] Japan [REDACTED] 14,000,000 total [REDACTED] 4,100,000 total Second Sino-Japanese War Taishō period Shōwa period Asia-Pacific Mediterranean and Middle East Other campaigns Coups The Second Sino-Japanese War
16008-616: The United Kingdom was obtained for the bombing, as was required by the Quebec Agreement , and orders were issued on 25 July by General Thomas Handy , the acting chief of staff of the United States Army , for atomic bombs to be used against Hiroshima, Kokura , Niigata , and Nagasaki. These targets were chosen because they were large urban areas that also held militarily significant facilities. On 6v August,
16182-558: The United States in World War II included both military personnel killed in action and wounded in action . Nearly one million of the casualties occurred during the last year of the war, from June 1944 to June 1945. In December 1944, American battle casualties hit an all-time monthly high of 88,000 as a result of the German Ardennes Offensive . Worried by the losses sustained, President Roosevelt suggested
16356-399: The United States, Israel, India, Pakistan, Iraq, Iran, and others. Accordingly, states retain different codes and values about wartime conduct. Some signatories have routinely violated the Geneva Conventions in a way that either uses the ambiguities of law or political maneuvering to sidestep the laws' formalities and principles. The first three conventions have been revised and expanded, with
16530-607: The acting chief of staff, since Marshall was at the Potsdam Conference with Truman. It read in part: That day, Truman noted in his diary that: This weapon is to be used against Japan between now and August 10th. I have told the Sec. of War, Mr. Stimson, to use it so that military objectives and soldiers and sailors are the target and not women and children. Even if the Japs are savages, ruthless, merciless and fanatic, we as
16704-581: The air echelon, consisting of 29 officers and 61 enlisted men, flew by C-54 to North Field on Tinian, between 15 and 22 May. 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 ,
16878-450: The air raids to preserve fighter aircraft to counter the expected invasion. By mid-1945 the Japanese only occasionally scrambled aircraft to intercept individual B-29s conducting reconnaissance sorties over the country, to conserve supplies of fuel. In July 1945, the Japanese had 137,800,000 litres (1,156,000 US bbl) of avgas stockpiled for the invasion of Japan. About 72,000,000 litres (604,000 US bbl) had been consumed in
17052-722: The area of the Yangtze River Delta . Other sections of China were essentially in the hands of local Chinese warlords. Japan sought various Chinese collaborators and helped them establish governments friendly to Japan. This policy was called the Specialization of North China ( 華北特殊化 ; huáběitèshūhùa ), more commonly known as the North China Autonomous Movement. The northern provinces affected by this policy were Chahar , Suiyuan , Hebei , Shanxi , and Shandong. This Japanese policy
17226-490: The atomic attack, and the Japanese could deny the atomic bomb was lethal, making the mission less likely to produce surrender. Allied prisoners of war might be moved to the demonstration site and be killed by the bomb. They also worried that the bomb might be a failure, as the Trinity test was that of a stationary device, not an air-dropped bomb. In addition, although more bombs were in production, only two would be available at
17400-478: The attack should not be assigned any responsibility for the fact they were given the wrong target and that it is inappropriate to attempt to assign criminal responsibility for the incident to senior leaders because they were provided with wrong information by officials of another agency". The report also notes that "Much of the material submitted to the OTP consisted of reports that civilians had been killed, often inviting
17574-570: The best choice "to appeal to their compatriots". In preparation for dropping an atomic bomb on Hiroshima, the Oppenheimer-led Scientific Panel of the Interim Committee decided against a demonstration bomb and against a special leaflet warning. Those decisions were implemented because of the uncertainty of a successful detonation and also because of the wish to maximize shock in the leadership . No warning
17748-475: The bombing campaign to be further escalated. Aircraft flying from Allied aircraft carriers and the Ryukyu Islands also regularly struck targets in Japan during 1945 in preparation for Operation Downfall. Firebombing switched to smaller cities, with populations ranging from 60,000 to 350,000. According to Yuki Tanaka , the U.S. fire-bombed over a hundred Japanese towns and cities. The Japanese military
17922-434: The buildings. War crime A war crime is a violation of the laws of war that gives rise to individual criminal responsibility for actions by combatants in action, such as intentionally killing civilians or intentionally killing prisoners of war , torture , taking hostages , unnecessarily destroying civilian property , deception by perfidy , wartime sexual violence , pillaging , and for any individual that
18096-470: The capture of Nanjing, Japanese committed massive war atrocities including mass murder and rape of Chinese civilians after 13 December 1937, which has been referred to as the Nanjing Massacre . Over the next several weeks, Japanese troops perpetrated numerous mass executions and tens of thousands of rapes. The army looted and burned the surrounding towns and the city, destroying more than a third of
18270-442: The chance that one of them might be a dud. If the test were made on some neutral territory, it was hard to believe that Japan's determined and fanatical military men would be impressed. If such an open test were made first and failed to bring surrender, the chance would be gone to give the shock of surprise that proved so effective. On the contrary, it would make the Japanese ready to interfere with an atomic attack if they could. Though
18444-424: The city and 267,000 buildings in a single night. It was the deadliest bombing raid of the war, at a cost of 20 B-29s shot down by flak and fighters. By May, 75 percent of bombs dropped were incendiaries designed to burn down Japan's "paper cities". By mid-June, Japan's six largest cities had been devastated. The end of the fighting on Okinawa that month provided airfields even closer to the Japanese mainland, allowing
18618-464: The city's large foreign community and increase China's foreign support. On 13 August 1937, Kuomintang soldiers attacked Japanese Marine positions in Shanghai, with Japanese army troops and marines in turn crossing into the city with naval gunfire support at Zhabei , leading to the Battle of Shanghai. On 14 August, Chinese forces under the command of Zhang Zhizhong were ordered to capture or destroy
18792-650: The city. After more than three months of intense fighting, their casualties far exceeded initial expectations. On 26 October, the IJA captured Dachang, a key strong-point within Shanghai, and on 5 November, additional reinforcements from Japan landed in Hangzhou Bay. Finally, on 9 November, the NRA began a general retreat. Japan did not immediately occupy the Shanghai International Settlement or
18966-520: The commander of Project Alberta, they became known as the "Tinian Joint Chiefs". In April 1945, Marshall asked Groves to nominate specific targets for bombing for final approval by himself and Stimson. Groves formed a Target Committee, 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
19140-418: The conclusion to be drawn that crimes had therefore been committed. Collateral casualties to civilians and collateral damage to civilian objects can occur for a variety of reasons." The Rendulic Rule is a standard by which commanders are judged. German General Lothar Rendulic was charged for ordering extensive destruction of civilian buildings and lands while retreating from a suspected enemy attack in what
19314-508: The conflict into a full-scale war. Following the shooting of two Japanese officers who were attempting to enter the Hongqiao military airport on 9 August 1937, the Japanese demanded that all Chinese forces withdraw from Shanghai; the Chinese outright refused to meet this demand. In response, both the Chinese and the Japanese marched reinforcements into the Shanghai area. Chiang concentrated his best troops north of Shanghai in an effort to impress
19488-516: The country. China was reduced to a fractured state. As a result, China's prosperity began to wither and its economy declined. This instability presented an opportunity for nationalistic politicians in Japan to press for territorial expansion. In 1915, Japan issued the Twenty-One Demands to extort further political and commercial privilege from China, which was accepted by the regime of Yuan Shikai. Following World War I , Japan acquired
19662-618: The country. Yuan's attempts at restoring the monarchy triggered the National Protection War , and Yuan Shikai was overthrown after only a few months. In the aftermath of Shikai's death in June 1916, control of China fell into the hands of the Beiyang Army leadership. The Beiyang government was a civilian government in name, but in practice it was a military dictatorship with a different warlord controlling each province of
19836-641: The course of fighting. The United Nations defines war crimes as described in Article 8 of the Rome statute , the treaty that established the International Criminal Court: Under the law of armed conflict (LOAC), the death of non-combatants is not necessarily a violation; there are many things to take into account. Civilians cannot be made the object of an attack, but the death/injury of civilians while conducting an attack on
20010-411: The dead were civilians. Scholars have extensively studied the effects of the bombings on the social and political character of subsequent world history and popular culture , and there is still much debate concerning the ethical and legal justification for the bombings. According to supporters, the atomic bombings were necessary to bring an end to the war with minimal casualties and ultimately prevented
20184-468: The entire war. In February 1945, Prince Fumimaro Konoe advised Emperor Hirohito that defeat was inevitable, and urged him to abdicate. Even before the surrender of Nazi Germany on 8 May 1945, plans were underway for the largest operation of the Pacific War, Operation Downfall , the Allied invasion of Japan. The operation had two parts: set to begin in October 1945, Operation Olympic involved
20358-594: The expectation of destroying the Chinese Air Force . However, the Imperial Japanese Navy encountered unexpected resistance from the defending Chinese Curtiss Hawk II / Hawk III and P-26/281 Peashooter fighter squadrons; suffering heavy (50%) losses from the defending Chinese pilots (14 August was subsequently commemorated by the KMT as China's Air Force Day ). The skies of China had become
20532-429: The final adjustments of the bomb the Japanese defenders should attack, a faulty move might easily result in some kind of failure. Such an end to an advertised demonstration of power would be much worse than if the attempt had not been made. It was now evident that when the time came for the bombs to be used we should have only one of them available, followed afterwards by others at all-too-long intervals. We could not afford
20706-530: The first formal statements of the laws of war and war crimes in the nascent body of secular international law . The Lieber Code was written early in the American Civil War and President Abraham Lincoln issued as General Order 100 on April 24, 1863, just months after the military executions at Mankato, Minnesota . General Order 100, Instructions for the Government of the Armies of the United States in
20880-484: The fourth one added in 1949: Two Additional Protocols were adopted in 1977 with the third one added in 2005, completing and updating the Geneva Conventions: Just after WWI, world governments started to try and systematically create a code for how war crimes would be defined. Their first outline of a law was " Instructions for the Government of Armies of the United States in the Field" —also known as
21054-577: The government position. Japan's willingness to surrender remained conditional on 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. At Potsdam, Truman agreed to
21228-454: 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 has the advantage of the people being more highly intelligent and hence better able to appreciate the significance of the weapon. Hiroshima has the advantage of being such a size and with possible focussing from nearby mountains that
21402-562: The home islands area in April, May and June 1945. While the Japanese military decided to resume attacks on Allied bombers from late June, by this time there were too few operational fighters available for this change of tactics to hinder the Allied air raids. The discovery of nuclear fission in 1938 made the development of an atomic bomb a theoretical possibility. Fears that a German atomic bomb project would develop atomic weapons first, especially among scientists who were refugees from Nazi Germany and other fascist countries, were expressed in
21576-496: The home islands, backed by a civilian militia of 28 million. 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. The Americans were alarmed by the Japanese buildup, which was accurately tracked through Ultra intelligence. On 15 June 1945,
21750-607: The industrial buildings were also built around timber frames. The city as a whole was highly susceptible to fire damage. It was the second largest city in Japan after Kyoto that was still undamaged by air raids, primarily because it lacked the aircraft manufacturing industry that was the XXI Bomber Command's priority target. On 3 July, the Joint Chiefs of Staff placed it off limits to bombers, along with Kokura, Niigata and Kyoto. The population of Hiroshima had reached
21924-459: The international stigma of area-bombing cities. Even with the warnings, Japanese opposition to the war remained ineffective. In general, the Japanese regarded the leaflet messages as truthful, with many Japanese choosing to leave major cities. The leaflets caused such concern that the government ordered the arrest of anyone caught in possession of a leaflet. Leaflet texts were prepared by recent Japanese prisoners of war because they were thought to be
22098-709: The investigation results of the Association of the Families of the Victims of the Jinan massacre, it showed that 6,123 Chinese civilians were killed and 1,701 injured. Relations between the Chinese Nationalist government and Japan severely worsened as a result of the Jinan incident. As the National Revolutionary Army approached Beijing, Zhang Zuolin decided to retreat back to Manchuria, before he
22272-476: The late 20th century and early 21st century, international courts extrapolated and defined additional categories of war crimes applicable to a civil war . In 1474, the first trial for a war crime was that of Peter von Hagenbach , realised by an ad hoc tribunal of the Holy Roman Empire , for his command responsibility for the actions of his soldiers, because "he, as a knight, was deemed to have
22446-540: The leader of the world for the common welfare cannot drop that terrible bomb on the old capital [Kyoto] or the new [Tokyo]. He and I are in accord. The target will be a purely military one. The 16 July success of the Trinity Test in the New Mexico desert exceeded expectations. On 26 July, Allied leaders issued the Potsdam Declaration , which outlined the terms of surrender for Japan. The declaration
22620-406: The legal question of whether the expected incidental harm is excessive may be very subjective. For this reason, States have chosen to apply a "clearly excessive" standard for determining whether a criminal violation has occurred. When there is no justification for military action, such as civilians being made the object of attack, a proportionality analysis is unnecessary to conclude that the attack
22794-408: The matter. Truman agreed with Stimson, and Kyoto was temporarily removed from the target list. Groves attempted to restore Kyoto to the target list in July, but Stimson remained adamant. On 25 July, Nagasaki was put on the target list in place of Kyoto. It was a major military port, one of Japan's largest shipbuilding and repair centers, and an important producer of naval ordnance. In early May 1945,
22968-469: The meetings on 31 May and 1 June, scientist Ernest Lawrence had suggested giving the Japanese a non-combat demonstration. Arthur Compton later recalled that: It was evident that everyone would suspect trickery. If a bomb were exploded in Japan with previous notice, the Japanese air power was still adequate to give serious interference. An atomic bomb was an intricate device, still in the developmental stage. Its operation would be far from routine. If during
23142-489: The necessities of war." For example, conducting an operation on an ammunition depot or a terrorist training camp would not be prohibited because a farmer is plowing a field in the area; the farmer is not the object of attack and the operations would adhere to proportionality and military necessity. On the other hand, an extraordinary military advantage would be necessary to justify an operation posing risks of collateral death or injury to thousands of civilians. In "grayer" cases
23316-610: The only way to destroy their production capabilities, shifting from precision bombing to area bombardment with incendiaries. Like most strategic bombing during World War II , the aim of the air offensive against Japan was to destroy the enemy's war industries, kill or disable civilian employees of these industries, and undermine civilian morale . Over the next six months, the XXI Bomber Command under LeMay firebombed 64 Japanese cities. The firebombing of Tokyo , codenamed Operation Meetinghouse , on 9–10 March, killed an estimated 100,000 people and destroyed 41 km (16 sq mi) of
23490-570: The oppression of Korean residents". After five months of fighting, Japan established the puppet state of Manchukuo in 1932, and installed the last Emperor of China, Puyi , as its puppet ruler. Militarily too weak to challenge Japan directly, China appealed to the League of Nations for help. The League's investigation led to the publication of the Lytton Report , condemning Japan for its incursion into Manchuria, causing Japan to withdraw from
23664-604: The possibility of a demonstration that would not destroy human lives was attractive, no one could suggest a way in which it could be made so convincing that it would be likely to stop the war. The possibility of a demonstration was raised again in the Franck Report issued by physicist James Franck on 11 June and the Scientific Advisory Panel rejected his report on 16 June, saying that "we can propose no technical demonstration likely to bring an end to
23838-479: The prosecution of war crimes committed on or after that date. Several nations, most notably the United States, China, Russia, and Israel, have criticized the court. The United States still participates as an observer. Article 12 of the Rome Statute provides jurisdiction over the citizens of non-contracting states if they are accused of committing crimes in the territory of one of the state parties. The ICC only has jurisdiction over these crimes when they are "part of
24012-432: The purpose by Philip Morrison . Magnesium was chosen because it does not act as a neutron reflector . The core departed from Kirtland Army Air Field on a C-54 transport aircraft of the 509th Composite Group's 320th Troop Carrier Squadron on 26 July, and arrived at North Field 28 July. Three Fat Man high-explosive pre-assemblies, designated F31, F32, and F33, were picked up at Kirtland on 28 July by three B-29s, two from
24186-421: The region by pressuring Yuan Shikai , the president of the Republic of China at the time. With a widened range of economic privileges in Manchuria, Japan began focusing on developing and protecting matters of economic interests. This included railroads, businesses, natural resources, and a general control of the territory. With its influence growing, the Japanese Army began to justify its presence by stating that it
24360-406: The revolution. Yuan, wanting to remain in power, compromised with the revolutionaries, and agreed to abolish the monarchy and establish a new republican government, under the condition he be appointed president of China. The new Beiyang government of China was proclaimed in March 1912, after which Yuan Shikai began to amass power for himself. In 1913, the parliamentary political leader Song Jiaoren
24534-415: The same precision bombing tactics, with equally unsatisfactory results. The attacks initially targeted key industrial facilities but much of the Japanese manufacturing process was carried out in small workshops and private homes. Under pressure from United States Army Air Forces (USAAF) headquarters in Washington, LeMay changed tactics and decided that low-level incendiary raids against Japanese cities were
24708-439: 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; Yokohama , an urban center for aircraft manufacture, machine tools, docks, electrical equipment and oil refineries; Niigata , a port with industrial facilities including steel and aluminum plants and an oil refinery; and Kyoto , a major industrial center. The target selection
24882-451: The sleek A5Ms in dogfights , and it also proved to be a battle of attrition against the Chinese Air Force. At the start of the battle, the local strength of the NRA was around five divisions, or about 70,000 troops, while local Japanese forces comprised about 6,300 marines. On 23 August, the Chinese Air Force attacked Japanese troop landings at Wusongkou in northern Shanghai with Hawk III fighter-attack planes and P-26/281 fighter escorts, and
25056-446: The start of August, and they cost billions of dollars, so using one for a demonstration would be expensive. For several months, the U.S. had warned civilians of potential air raids by dropping more than 63 million leaflets across Japan. Many Japanese cities suffered terrible damage from aerial bombings; some were as much as 97 percent destroyed. LeMay thought that leaflets would increase the psychological impact of bombing, and reduce
25230-438: The tensions in the Northeast that led to the Mukden Incident and eventually the Second Sino-Japanese War. The Soviet Red Army victory over Xueliang's forces not only reasserted Soviet control over the CER in Manchuria but revealed Chinese military weaknesses that Japanese Kwantung Army officers were quick to note. The Soviet Red Army performance also stunned the Japanese. Manchuria was central to Japan's East Asia policy. Both
25404-416: The text of this leaflet reading in Japanese "... we cannot promise that only these cities will be among those attacked ..." Hiroshima was not listed. In 1943, the United States and the United Kingdom signed the Quebec Agreement , which stipulated that nuclear weapons would not be used against another country without mutual consent. Stimson therefore had to obtain British permission. A meeting of
25578-448: The time, the Nationalist government relocated to Chongqing in the Chinese interior. After the Sino-Soviet Non-Aggression Pact , Soviet aid bolstered the National Revolutionary Army and Air Force . By 1939, after Chinese victories at Changsha and with Japan's lines of communications stretched deep into the interior, the war reached a stalemate. The Japanese were unable to defeat Chinese Communist Party forces in Shaanxi , who waged
25752-404: The use of a weapon that 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. Consideration
25926-406: The use of atomic bombs on Germany as soon as possible, but was informed the first usable atomic weapons were still months away. America's reserves of manpower were running out. Deferments for groups such as agricultural workers were tightened, and there was consideration of drafting women. At the same time, the public was becoming war-weary, and demanding that long-serving servicemen be sent home. In
26100-417: The war had ended, it was estimated by French authorities that 2,000 German prisoners were still being killed or maimed each month in mine-clearing accidents. The wording of the 1949 Third Geneva Convention was intentionally altered from that of the 1929 convention so that soldiers who "fall into the power" following surrender or mass capitulation of an enemy are now protected as well as those taken prisoner in
26274-433: The war, reached disastrous levels by the middle of 1945. The loss of shipping also affected the fishing fleet, and the 1945 catch was only 22 percent of that in 1941. The 1945 rice harvest was the worst since 1909, and hunger and malnutrition became widespread. U.S. industrial production was overwhelmingly superior to Japan's. By 1943, the U.S. produced almost 100,000 aircraft a year, compared to Japan's production of 70,000 for
26448-404: The war; we see no acceptable alternative to direct military use." Franck then took the report to Washington, D.C., where the Interim Committee met on 21 June to re-examine its earlier conclusions; but it reaffirmed that there was no alternative to the use of the bomb on a military target. Like Compton, many U.S. officials and scientists argued that a demonstration would sacrifice the shock value of
26622-438: The winners (" Victor's justice "), as some controversies have not been ruled as war crimes. Some examples include the Allies ' destruction of Axis cities during World War II , such as the firebombing of Dresden , the Operation Meetinghouse raid on Tokyo (the most destructive single bombing raid in history), and the atomic bombings of Hiroshima and Nagasaki . In regard to the strategic bombing during World War II , there
26796-468: The work was accelerated, first as a pilot program, and finally in the agreement by Roosevelt to turn the work over to the U.S. Army Corps of Engineers to construct the production facilities necessary to produce uranium-235 and plutonium-239 . This work was consolidated within the newly created Manhattan Engineer District, which became better known as the Manhattan Project , eventually under the direction of Major General Leslie R. Groves, Jr. . The work of
26970-422: Was assassinated by the Kwantung Army in 1928. His son, Zhang Xueliang , took over as the leader of the Fengtian clique in Manchuria. Later in the same year, Zhang declared his allegiance to the Nationalist government in Nanjing under Chiang Kai-shek , and consequently, China was nominally reunified under one government. The July–November 1929 conflict over the Chinese Eastern Railroad (CER) further increased
27144-414: Was also called the "Eight Years' War of Resistance" (simplified Chinese: 八年抗战 ; traditional Chinese: 八年抗戰 ), but in 2017 the Chinese Ministry of Education issued a directive stating that textbooks were to refer to the war as the "Fourteen Years' War of Resistance" (simplified Chinese: 十四年抗战 ; traditional Chinese: 十四年抗戰 ), reflecting a focus on the broader conflict with Japan going back to
27318-479: Was also given to using biological weapons . 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
27492-406: Was assassinated ; it is generally believed Yuan Shikai ordered the assassination. Yuan Shikai then forced the parliament to pass a bill to strengthen the power of the president and sought to restore the imperial system , becoming the new emperor of China. However, there was little support for an imperial restoration among the general population, and protests and demonstrations soon broke out across
27666-464: Was carried out. Two different types of bombs were eventually developed: a gun-type fission weapon that used uranium-235, called Little Boy , and a more complex implosion-type nuclear weapon that used plutonium-239, called Fat Man . There was a Japanese nuclear weapon program , but it lacked the human, mineral, and financial resources of the Manhattan Project, and never made much progress towards developing an atomic bomb. The 509th Composite Group
27840-499: Was chosen to allow for Olympic to complete its objectives, for troops to be redeployed from Europe, and the Japanese winter to pass. Japan's geography made this invasion plan obvious to the Japanese; 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. In all, there were 2.3 million Japanese Army troops prepared to defend
28014-465: Was completed on 15 June, and the target insert on 24 July. The projectile and eight bomb pre-assemblies (partly assembled bombs without the powder charge and fissile components) left Hunters Point Naval Shipyard , California, on 16 July aboard the cruiser USS Indianapolis , and arrived on Tinian on 26 July. The target insert followed by air on 30 July, accompanied by Commander Francis Birch from Project Alberta. Responding to concerns expressed by
28188-416: Was constituted on 9 December 1944, and activated on 17 December 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
28362-453: Was fought between the Republic of China and the Empire of Japan between 1937 and 1945, following a period of war localized to Manchuria that started in 1931. It is considered part of World War II , and often regarded as the beginning of World War II in Asia. It was the largest Asian war in the 20th century and has been described as "the Asian Holocaust ", in reference to the scale of Japanese war crimes against Chinese civilians. It
28536-410: Was given to Hiroshima that a new and much more destructive bomb was going to be dropped. Various sources gave conflicting information about when the last leaflets were dropped on Hiroshima prior to the atomic bomb. Robert Jay Lifton wrote that it was 27 July, and Theodore H. McNelly wrote that it was 30 July. The USAAF history noted that eleven cities were targeted with leaflets on 27 July, but Hiroshima
28710-416: Was located in 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 70 mm and 80 mm (2.8 and 3.1 inch) anti-aircraft guns of
28884-399: Was most effective in the area of what is now Inner Mongolia and Hebei. In 1935, under Japanese pressure, China signed the He–Umezu Agreement , which forbade the KMT to conduct party operations in Hebei. In the same year, the Chin–Doihara Agreement was signed expelling the KMT from Chahar. Thus, by the end of 1935 the Chinese government had essentially abandoned northern China. In its place,
29058-402: Was no international treaty or instrument protecting a civilian population specifically from attack by aircraft, therefore the aerial attacks on civilians were not officially war crimes. The Allies at the trials in Nuremberg and Tokyo never prosecuted the Germans, including Luftwaffe commander-in-chief Hermann Göring , for the bombing raids on Warsaw , Rotterdam , and British cities during
29232-408: Was not one of them, and there were no leaflet sorties on 30 July. Leaflet sorties were undertaken on 1 and 4 August. Hiroshima may have been 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. Three versions were printed of a leaflet listing 11 or 12 cities targeted for firebombing; a total of 33 cities listed. With
29406-475: 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 Kantarō Suzuki declared at
29580-453: Was simply protecting its own economic interests. However militarists in the Japanese Army began pushing for an expansion of influence, leading to the Japanese Army assassinating the warlord of Manchuria, Zhang Zuolin . This was done with hopes that it would start a crisis that would allow Japan to expand their power and influence in the region. When this was not as successful as they desired, Japan then decided to invade Manchuria outright after
29754-406: Was subject to the following criteria: These cities were largely untouched during the nightly bombing raids, and the Army Air Forces agreed to leave them off the target list so accurate assessment of the damage caused by the atomic bombs 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
29928-412: Was trained and equipped with the specialized Silverplate version of the Boeing B-29 Superfortress , and deployed to Tinian in the Mariana Islands . The Allies called for the unconditional surrender of the Imperial Japanese armed forces in the Potsdam Declaration on 26 July 1945, the alternative being "prompt and utter destruction". The Japanese government ignored the ultimatum. The consent of
30102-445: Was unable to stop the Allied attacks and the country's civil defense preparations proved inadequate. Japanese fighters and anti-aircraft guns had difficulty engaging bombers flying at high altitude. From April 1945, the Japanese interceptors also had to face American fighter escorts based on Iwo Jima and Okinawa. That month, the Imperial Japanese Army Air Service and Imperial Japanese Navy Air Service stopped attempting to intercept
30276-425: Was used by Japan, as neither country had made a formal declaration of war . From the Japanese perspective, localizing these conflicts was beneficial in preventing intervention from other countries, particularly the United Kingdom and the United States, which were its primary source of petroleum and steel respectively. A formal expression of these conflicts would potentially lead to an American embargo in accordance with
#383616