Sino-American Cooperative Organization
The Sino-American Special Technical Cooperative Organization (Chinese:中美特种技术合作所), also known as the Sino-American Cooperative Organization (SACO), was an organization created by the SACO Treaty signed by the Republic of China and the United States of America in 1942 during the Second World War. It established a mutual intelligence gathering entity in China between the respective nations against Japan. It operated in China jointly along with the Office of Strategic Services (OSS), America's first intelligence agency and forerunner of the CIA while also serving as joint training program between the two nations.
The first and last operational chief of the organization was Dai Li (Tai Li), head of Chiang Kai-shek's secret police, the Bureau of Investigation and Statistics. A fierce anti-communist and shadowy man of mystery, General Li also commanded the Loyal Patriotic Army (LPA), a large militia force active in Japanese-occupied interior regions of China. Commander for the American forces was United States Navy Captain Milton E. Miles. "Mary" Miles", later a Vice Admiral, was commander of Naval Group China (NGC), the American Navy's intelligence unit in China during the war.
About 2500 sailors and Marines trained and operated with Chinese guerilla forces, often behind Japanese lines. Among all the wartime missions that Americans set up in China, SACO was the only one that adopted a policy of "total immersion" with the Chinese. The "Rice Paddy Navy" or” What-the-Hell Gang’”operated in the China-Burma-India theater, advising and training, forecasting weather and scouting landing areas for USN fleet and Gen Claire Chennault’s 14th AF, rescuing downed American flyers, and intercepting Japanese radio traffic. An underlying mission objective during the last year of war was the development and preparation of the China coast for Allied penetration and occupation. The Foochow (Fujian Province) was scouted as a potential staging area and springboard for the future invasion of Japan.
The official SACO organization dissolved in 1946 after the close of the war, with the subsequent departure of the Naval Group China. However some KMT loyal SACO-trained guerillas continued aggression against the CCP during the civil war 1946-1949. For a long period after the Communist takeover, SACO became associated with imperial foreign aggression and atrocities of the revolution were attributed to sinister US involvement. The Chinese government memorialized incidents of torture and massacre at Chongqing former SACO HQ at Happy Valley, and displayed the "Gele Mountain Revolution Memorial Museum," citing American supplied handcuffs and weapons in the exhibition as evidence of American involvement. The coalition was blamed for atrocities committed years after dissolution, with no acknowledgement of SACO’s participation in the war against Japan. Only recently has the government taken a position to “restore history’s original face.”
Further references 
- Shen Yu, "SACO in History and Histories: Politics and Memory," Journal of American-East Asian Relations 5.1 (1996): 37-76.
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