Documents were found in Shanghai that showed details of how the Japanese Army went about opening comfort stations for Japanese troops in occupied Shanghai. Documents included the Tianjin Municipal Archives from the archival files of the Japanese government and the Japanese police during the periods of the occupation in World War II. Municipal archives from Shanghai and Nanjing were also examined. One conclusion reached was that the relevant archives in Korea are distorted. A conclusion of the study was that the Japanese Imperial government, and the colonial government in Korea, tried to avoid recording the illegal mobilization of comfort women. It was concluded that they burned most of the records immediately before the surrender; but, the study confirmed that some documents and records survived.