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China exposes Unit 731's wartime horrors with new evidence of biological atrocities

Decades after the war, haunting testimonies resurface—vivisections, plague bombs, and a tribunal that tried Japan's darkest secret. Why was justice never fully served?

The image shows a green poster with a map of the Japanese Forces and Gun Installations. The map is...
The image shows a green poster with a map of the Japanese Forces and Gun Installations. The map is detailed and shows the various locations of the forces and gun installations. The text on the poster provides additional information about the map.

China exposes Unit 731's wartime horrors with new evidence of biological atrocities

New evidence of wartime atrocities by Japan's Unit 731 has been unveiled by China. The revelations highlight brutal experiments and biological warfare that killed hundreds of thousands. Among the victims were residents of Khabarovsk, where a tribunal later tried those responsible.

The unit's crimes included human vivisections, plague weaponisation, and mass civilian deaths. A 1949 trial in Khabarovsk became the only legal reckoning for biological warfare in history.

Unit 731 conducted horrific experiments on at least 3,000 people during World War II. Prisoners were subjected to vivisections without anaesthesia, causing extreme suffering. Researchers also infected animals with plague, performed surgeries to gauge lethal doses, and developed ways to weaponise the disease.

The unit's biological attacks killed over 300,000 Chinese civilians. Their methods ranged from contaminating water supplies to deploying infected fleas. Many victims died in agony from diseases like anthrax, cholera, and bubonic plague.

After the war, Soviet authorities held a tribunal in Khabarovsk, often called the 'second Nuremberg'. Twelve high-ranking Japanese scientists and officers faced charges. Sentences included labour camp terms from two to 25 years, with the harshest penalty reserved for the unit's commander.

Decades later, a 47-minute archival video emerged featuring Hideo Sato, a former plague researcher in Unit 731. His testimony was screened at the Museum of Evidence of Crimes by Unit 731, providing firsthand accounts of the unit's activities.

The Khabarovsk tribunal remains the sole legal case addressing biological warfare crimes. Only a handful of perpetrators were ever prosecuted. The newly released evidence underscores the scale of suffering inflicted by Unit 731, with survivors and descendants still seeking full recognition of the atrocities.

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