 The article said that in July 2014, Yamaguchi found a letter to Korean General Chae Myung-shin from the US military command at what is now Ho Chi Minh City that appeared to have been written sometime from January 1969 to April 1969.The article said that the letter that Yamaguchi found mentioned a ""Turkish bath for South Korean troops"", ""acts of prostitution taking place"", ""Vietnamese women working"" and that US troops could also use the facility which was intended to be ""exclusively for South Korean troops"" if they paid a ""fee of US$38 per visit"".The article said that Yamaguchi then asked US Vietnam veterans about the place, and the veterans said that it was a prostitution center that had young Vietnamese prostitutes.