The occupying US government undertook the selective cover-up of some Japanese war crimes after the End of World War II in Asia, granting political immunity to military personnel who had engaged in human experimentation and other crimes against humanity, predominantly in mainland China. [1] [2] The pardon of Japanese war criminals, among whom were Unit 731's commanding officers General Shiro Ishii and General Masaji Kitano, was overseen by General of the Army Douglas MacArthur in September 1945. While a series of war tribunals and trials was organized, many of the high-ranking officials and doctors who devised and respectively performed the experiments were pardoned and never brought to justice due to the US government both classifying incriminating evidence, as well as blocking the prosecution access to key witnesses. [3] As many as 12,000 people, most of them Chinese, died in Unit 731 alone and many more died in other facilities, such as Unit 100 and in field experiments throughout Manchuria. [4] [5]
The American government sent General MacArthur to oversee rebuilding post-war Japan and the shift to a democracy from a previously authoritarian system of governance. During the occupation, MacArthur assigned Lieutenant Colonel Murray Sanders to gather data on Japan's biological warfare, which was obtained through human experimentation. At Sanders' suggestion, MacArthur offered full political immunity to high-ranking officials who were instrumental in perpetrating crimes against humanity, in exchange for the data about their experiments. Among those was Shiro Ishii, the commander of Unit 731. During the cover-up operation, the U.S. government paid money to obtain data on human experiments conducted in China, according to two declassified U.S. government documents. [6]
The total amount paid to unnamed former members of the infamous unit was somewhere between 150,000 yen to 200,000 yen. An amount of 200,000 yen at that time is the equivalent of 20 million yen to 40 million yen today. [7]
Japan's Emperor Hirohito gave his consent regarding the policies and activities of Unit 731, Unit 100 and other human experimentation facilities. Though it is unclear on whether Emperor Hirohito was made aware of the full extent of Unit 731, the emperor's younger brother, Prince Mikasa, had toured the headquarters of Unit 731 and wrote in his memoirs that he watched films of how Chinese prisoners were "made to march on the plains of Manchuria for poison gas experiments on humans." [8]
MacArthur, abiding by the Potsdam Declaration, gathered a jury for the Tokyo trials, where a number of Japanese officials were successfully tried and convicted. [9] In 1981, one of the last surviving members of the Tokyo Tribunal, Judge Bert Röling, expressed his unhappiness that the war crimes committed in Unit 731 had been protected by the US government and wrote, "It is a bitter experience for me to be informed now that centrally ordered Japanese war criminality of the most disgusting kind was kept secret from the court by the U.S. government." [10]
Unit 731, short for Manchu Detachment 731 and also known as the Kamo Detachment and the Ishii Unit, was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that engaged in lethal human experimentation and biological weapons manufacturing during the Second Sino-Japanese War (1937–1945) and World War II. Estimates vary as to how many were killed. Between 1936 to 1945, roughly 14,000 victims were murdered in Unit 731. It is estimated that at least 300,000 individuals have died due to infectious illnesses caused by the activities of Unit 731 and its affiliated research facilities. It was based in the Pingfang district of Harbin, the largest city in the Japanese puppet state of Manchukuo and had active branch offices throughout China and Southeast Asia.
The Supreme Commander for the Allied Powers was the title held by General Douglas MacArthur during the United States-led Allied occupation of Japan following World War II. It issued SCAP Directives to the Japanese government, aiming to suppress its "militaristic nationalism". The position was created at the start of the occupation of Japan on August 14, 1945. It was originally styled the Supreme Commander of the Allied Powers.
The International Military Tribunal for the Far East (IMTFE), also known as the Tokyo Trial and the Tokyo War Crimes Tribunal, was a military trial convened on 29 April 1946 to try leaders of the Empire of Japan for their crimes against peace, conventional war crimes, and crimes against humanity, leading up to and during the Second World War. The IMTFE was modeled after the International Military Tribunal (IMT) at Nuremberg, Germany, which prosecuted the leaders of Nazi Germany for their war crimes, crimes against peace, and crimes against humanity.
Men Behind the Sun is a 1988 Hong Kong historical exploitation horror film directed by T. F. Mou, and written by Mei Liu, Wen Yuan Mou and Dun Jing Teng. The film is a graphic depiction of the war atrocities committed by the Imperial Japanese Army at Unit 731, the secret biological weapons experimentation unit of the Imperial Japanese Army during the Second Sino-Japanese War. It details the various cruel medical experiments Unit 731 conducted on Chinese and ethnic Russian prisoners towards the end of the war.
During its imperial era, the Empire of Japan committed numerous war crimes and crimes against humanity across various Asian-Pacific nations, notably during the Second Sino-Japanese and Pacific Wars. These incidents have been sometimes referred to as "the Asian Holocaust", as "Japan's Holocaust", and also as the "Rape of Asia". The crimes occurred during the early part of the Shōwa era, under Hirohito's reign.
Unit 100 was an Imperial Japanese Army facility called the Kwantung Army Warhorse Disease Prevention Shop that focused on the development of biological weapons during World War II. It was operated by the Kempeitai, the Japanese military police. Its headquarters was located in Mokotan, Manchukuo, a village just south of the city of Changchun. It had branches in Dairen and Hailar. The Hailar branch was later transferred to Foshan. Between 600 and 800 people worked at Unit 100.
Zhongma Fortress — also Zhong Ma Prison Camp or Unit Tōgō — was a prison camp where the Japanese Kwantung Army carried out covert biological warfare research on human test subjects. Built in Beiyinhe, outside of Harbin, Manchukuo during the Second Sino-Japanese War, the camp served as a center for human subject experimentation and could hold up to 1,000 prisoners at any given time. In 1937 the prison camp was destroyed and testing operations were transferred to Pingfang under Unit 731.
The Khabarovsk war crimes trials were the Soviet hearings of twelve Japanese Kwantung Army officers and medical staff charged with the manufacture and use of biological weapons, and human experimentation, during World War II. The war crimes trials were held between 25 and 31 December 1949 in the Soviet industrial city of Khabarovsk (Хабаровск), the largest in the Russian Far East.
Surgeon General Shirō Ishii was a Japanese war criminal, microbiologist and army medical officer who was the director of Unit 731, a biological warfare unit of the Imperial Japanese Army. Ishii led the development and application of biological weapons at Unit 731 in Manchukuo during the Second Sino-Japanese War from 1937 to 1945, including the bubonic plague attacks at Chinese cities of Changde and Ningbo, and planned the Operation Cherry Blossoms at Night biological attack against the United States.
War crimes in Manchukuo were committed during the rule of the Empire of Japan in northeast China, either directly, or through its puppet state of Manchukuo, from 1931 to 1945. Various war crimes have been alleged, but have received comparatively little historical attention.
World War II officially ended in Asia on September 2, 1945, with the surrender of Japan on the USS Missouri. Before that, the United States dropped two atomic bombs on Japan, and the Soviet Union declared war on Japan, causing Emperor Hirohito to announce the acceptance of the Potsdam Declaration on August 15, 1945, which would eventually lead to the surrender ceremony on September 2.
Prince Tsuneyoshi Takeda was the second and last heir of the Takeda-no-miya collateral branch of the Japanese Imperial Family.
Masaji Kitano was a Japanese war criminal, medical physician, microbiologist and a lieutenant general in the Imperial Japanese Army.
Throughout history, prisoners have been frequent participants in scientific, medical and social human subject research. Some of the research involving prisoners has been exploitative and cruel. Many of the modern protections for human subjects evolved in response to the abuses in prisoner research. Research involving prisoners is still conducted today, but prisoners are now one of the most highly protected groups of human subjects
Allegations that the United States military used biological weapons in the Korean War were raised by the governments of the People's Republic of China, the Soviet Union, and North Korea. The claims were first raised in 1951. The story was covered by the worldwide press and led to a highly publicized international investigation in 1952. Secretary of State Dean Acheson and other American and allied government officials denounced the allegations as a hoax. Subsequent scholars are split about the truth of the claims.
The Kwantung Army was a general army of the Imperial Japanese Army from 1919 to 1945.
Unethical human experimentation is human experimentation that violates the principles of medical ethics. Such practices have included denying patients the right to informed consent, using pseudoscientific frameworks such as race science, and torturing people under the guise of research. Around World War II, Imperial Japan and Nazi Germany carried out brutal experiments on prisoners and civilians through groups like Unit 731 or individuals like Josef Mengele; the Nuremberg Code was developed after the war in response to the Nazi experiments. Countries have carried out brutal experiments on marginalized populations. Examples include American abuses during Project MKUltra and the Tuskegee syphilis experiments, and the mistreatment of indigenous populations in Canada and Australia. The Declaration of Helsinki, developed by the World Medical Association (WMA), is widely regarded as the cornerstone document on human research ethics.
Operation PX, also known as Operation Cherry Blossoms at Night, was a planned Japanese military attack on civilians in the United States using biological weapons, devised during World War II. The proposal was for Imperial Japanese Navy submarines to launch seaplanes that would deliver weaponized bubonic plague, developed by Unit 731 of the Imperial Japanese Army, to the West Coast of the United States. The operation was abandoned shortly after its planning was finalized in March 1945 due to the strong opposition of General Yoshijirō Umezu, Chief of the Army General Staff.
Murray Jonathan Sanders was an American physician and military officer who was involved with the U.S. Army's biological warfare program during World War II. He was heavily involved in the American cover-up of Japanese war crimes, having been the U.S. officer who convinced General Douglas MacArthur to grant legal immunity to members of the infamous Japanese Unit 731 chemical warfare research unit, despite the unit's practice of unethical human experimentation.
Yoshimura Hisato was a Japanese medical scientist and physiologist who served as a member of Unit 731, a biological warfare unit of the Imperial Japanese Army, during World War II and conducted experiments on prisoners of war and civilians in Manchukuo, Northeast China. He later served in several capacities for Japanese research organizations.