The OSS Deer Team was established by the United States Office of Strategic Services on May 16, 1945 to attack and intercept materials on the railroad from Hanoi in central Vietnam to Lạng Sơn in northeast Vietnam with the hope of keeping Japanese military units from entering China. They sent intelligence reports to OSS agents stationed in China. The team provided training, medical and logistical assistance to Hồ Chí Minh and the Việt Minh in 1945.