Scouts are called the Bureau of Investigation and Statistics of the Military Commission of the National Government (BIS). Its predecessor was the "Blue Clothes Society" founded by Chiang Kai-shek on 1928 (1932). 1in April, 934, Chiang Kai-shek merged the Nanchang Hangying Investigation Department with the Secret Service of Lanyishe to form the Secret Service of the Military Commission, with Dai Li (Huangpu No.6) as the director. 1937 In April, Chiang Kai-shek reorganized the secret service, strengthened the intelligence collection of the producers of * * *, and established the "Investigation and Statistics Bureau of the Military Commission of the National Government", with Chen Lifu, Secretary General of the Central Party Department, as the director. "Scout Bureau" consists of two departments. 1 Department is responsible for party affairs investigation (that is, the predecessor of the Bureau of Investigation and Statistics of the Kuomintang Central Executive Committee), and Xu Enceng (Huangpu Phase IV) is the director. The second is the secret service, with Dai Li as the director. 1September, 938, the Second Division set up another portal, upgraded to "Investigation and Statistics Bureau of the Military Commission of the National Government", which was still under the responsibility of Dai Li, and consisted of Military Intelligence Department, Party and Government Intelligence Department, Telecommunication Intelligence Department, Police Department, Punishment Department, Training and Counter-measures Department, Special and Psychological Warfare Department and Special Technology Research and Application Department.

In the heyday of BIS, there were about 102000 agents and various paramilitary traffic police brigades, which were well-equipped and well-trained. The influence permeates all levels of party and government, military affairs, education, culture and police affairs. Throughout the Second World War, BIS has been the largest and most efficient intelligence agency in the world, and it is also the most advanced telecommunications decoding technology. At that time, office of strategic services (OSS), the predecessor of the CIA, had just started. However, scout's main work direction is not to defend national security externally, but to suppress * * * and dissidents internally, which makes the organization degenerate into a secret service that carries out white terror internally.

During War of Resistance against Japanese Aggression's period, scout agents went deep into enemy-occupied areas to create terrorist activities against the Japanese army during War of Resistance against Japanese Aggression's period, while various guerrilla headquarters and traffic police brigades under BIS went deep into enemy-occupied areas to carry out extensive guerrilla warfare, which played a certain role in cracking down on Japanese aggressors and traitors. But they put more energy into destroying the ground behind the enemy lines led by China's * * * production party, undermining the anti-Japanese United front and weakening the influence of the * * * production party, making it not a reliable force to attack the enemy in War of Resistance against Japanese Aggression, but often becoming an internal destroyer. Sometimes, many peripheral organizations of the military government deliberately cooperated with the Japanese aggressors to stifle the people's anti-Japanese forces and became the infighting of the anti-Japanese United front.

1938, after the Japanese occupation of Shanghai, in order to stabilize the situation, they deliberately attracted influential upper-class people in China to form the so-called "interim government". After some consideration, the Japanese chose Tang, who served as prime minister in the early years of the Republic of China. After much consideration, Tang accepted the invitation of the Japanese, and the festival in the evening was not guaranteed. When Chiang Kai-shek learned of this, he was furious and tried to make BIS "cut off disobedience".

1938, just three months after Tang accepted the invitation of organizing the "government", the BIS "enemy-occupied area action group" who sneaked into Shanghai killed him with an axe.

Subsequently, BIS successively planned the assassinations of Yin Rugeng (the great traitor who organized the "North China Autonomous Government"), Ji Yunqing (the eldest brother of the "Tong" generation in green gang, the backstage boss of No.76 Wang Pseudo), Wang Jingwei and Zhou Fohai. Although these actions were not completely successful, they undoubtedly effectively deterred the defectors. 1In August, 945, Emperor Hirohito of Japan decided to accept the Potsdam Proclamation and issue a surrender letter. Jiang Zhongzheng, then Chairman of the Kuomintang, Chairman of the National Government and Commander-in-Chief of China Theater, knew the news four hours earlier than Truman, which was entirely due to the dedication and extraordinary contribution of military intelligence personnel.