During the early 1950s War on Korea the U.S. used biological weapons against North Korea and China. Bombs designed to spread leaflets were filled with plague infested rats and dropped on Korean towns. Various infecting insects were released. Leaflets were contaminated with small pox and then distributed. Several local epidemics were caused by these attacks.
The program was a continuation of one which a special unit of the Imperial Japanese Army had developed during the second world war. Unit 731 and its leaders were not indicted for the war crimes they had committed during the war but integrated into the U.S. biological warfare program.
The Soviet Union and China made political noise about the use of biological weapons but the U.S. stoically denied that it ever used such weapons. U.S. pilots, shot down and imprisoned by the North Korean forces, admitted that they had dropped such bombs. The U.S. then falsely alleged that the pilots had been tortured and must have lied. This led to demands to train all pilots to resist torture measures:
Since World War II the U.S. Airforce and Navy had established training courses in Survival, Evasion, Resistance and Escape (SERE) for pilots that might be captured by enemies. During these courses interrogations were staged to provide realistic training. After the Korea War anti-torture training was added. Torture of "prisoners" was "simulated" with the trainees. Decades later, during the war of terror and on Iraq, the CIA hired two psychologists from the SERE training staff as "behavioral science consultants" to teach its agents how to use torture on prisoners. The absolutely inhuman and dangerous methods those SERE "experts" devised proliferated to the U.S. military which, together with the CIA, used them on alleged enemy combatants in Abu Ghraib, Guantanamo and other places.
Now back to the War on Korea. The Chinese and Soviets sponsored the International Scientific Commission (ISC) headed by one of the foremost British scientists of his time, Sir Joseph Needham, to investigate the use of biological weapons during the war. Three years ago we wrote about its report:
For a long time the commission's report and its appendices with the witness statements were suppressed and not available online. Jefferey Kay, a psychologist and author living in northern California, dug them up and recently published them (recommended) on the web for the first time. You can read them here:
Report of the International Scientific Commission for the Investigation of the Facts Concerning Bacterial Warfare in Korea and China. - pdf
Appendixes AA and BB concerning claims of air attacks against various villages in Northeastern China in the Spring of 1952. - pdf
Sir Joseph Needham was blacklisted by the U.S. during the McCarthy anti-communist campaign.
Needham's investigations have since been confirmed by other scholars investigating the general case.
Now Jeffrey Kaye has dug up additional documents which confirm the other reports of U.S. germ attacks on North Korea and China. Interestingly these documents are from the CIA.