The US government has again speculated on the origin of the COVID-19 pandemic. In fact, it is the US who played the shameless trick of a thief crying out "Stop thief". The US biological lab Fort Detrick is inextricably linked with the Unit 731, a covert biological and chemical warfare research and development unit of the Imperial Japanese Army.
The US Army established a biological warfare research base in Detrick, Maryland in April 1943. In case of escaping public attention, the base was named Field Camp Detrick. This is the predecessor of Fort Detrick.
Since September 1945，US had successively sent several experts on biological warfare at Fort Detrick in the following years to investigate the bacteria warfare in Japan and even contact the main members of Unit 731, including the leader of Unit 731,Shiro Ishii, to learn about biological warfare.
In September 1947, the US State Department instructed Douglas MacArthur, the then Supreme Commander of the US troops in Japan, that to obtain the biological experiment data held by Ishii and others, the US would not hold Ishii and his associates responsible for war crimes.
In the following years to the end of Tokyo Trial in November 1948, a secret deal was reached between the US and Japan. On the condition of exempting Unit 731 war criminals, the US obtained data on Unit 731's human experiments, bacteria experiments, germ warfare and poison gas experiments, and paid 250,000 yen for this.
These data and information include a large number of experimental reports of Unit 731, as well as more than 8,000 pathological specimens and videos related to the use of biological weapons on living human experiments and living human anatomy.
The archives show that the cover of the reports on the experiments conducted by Unit 731 on Burkholderia mallei, Bacillus anthracis and Yersinia pestis all have the words related to the Biological Warfare Laboratory, Fort Detrick, Maryland.
To obtain biological experiment data, the US covered up for World War II war criminals and concealed the monstrous crimes of Shiro Ishii and Unit 731 from the world. In August 2017, a documentary broadcast by NHK in Japan showed that protected by the US, almost no members of Unit 731 received any punishment for their crimes.
After the US obtained these bloody data, they used it to conduct biological weapons research, which promoted the rapid development and growth of Fort Detrick after World War II. Fort Detrick became a Bio-Safety Level 4 (BSL-4) laboratory of the US military.