Original sentence: At end of  the 1950s, the BIS staff had largely eliminated in the mainland.During the Sino-Japanese War,BIS has executed on the assassination of the military and goverment personnel.In 1938, the Special Works Department was expanded and took over the " Investigation and Statistics Bureau" to cope with the increasingly heavy tasks of intelligence operations.In August 1946,the Ministry of National Defense was established to replace Military Commission,the BIS changed name as the Counterespionage Bureau under the Ministry of National Defense.It's name also call Bureau of Investigation and Statistics(BIS).The BIS staff suffered severely repressed by Chinese Communist government ,during repressive counter-revolutionary movement, the BIS staff in  mainland, unless renegade, others are executed by firing squad or received heavy punishment.Various "guerrilla command" and "group of traffic police" under the BIS in the occupied by Japan were carried out in depth a wide range of guerrilla warfare, the fight against the Japanese and Japanese collaborato.when the "Investigation and Statistics Bureau" was established under the Military Commission, the "Special Works Department" was incorporated into the Bureau and renamed the "2nd Division" responsible for intelligence collection and personnel training
Edited sentence: At end of  the 1950s, the BIS staff had largely eliminated on the mainland.During the Sino-Japanese War,BIS has executed on the assassination of the military and government personnel.In 1938, the Special Works Department was expanded and took over the "Investigation and Statistics Bureau" to cope with the increasingly heavy tasks of intelligence operations.In August 1946, the Ministry of National Defense was established to replace Military Commission, the BIS changed name as the Counterespionage Bureau under the Ministry of National Defense.Its name also call Bureau of Investigation and Statistics(BIS).The BIS staff suffered severely repressed by Chinese Communist government, during repressive counter-revolutionary movement, the BIS staff in  mainland, unless renegade, others are executed by firing squad or received heavy punishment.Various "guerrilla command" and "group of traffic police" under the BIS in the occupied by Japan were carried out in depth a wide range of guerrilla warfare, the fight against the Japanese and Japanese collaboration.When the "Investigation and Statistics Bureau" was established under the Military Commission, the "Special Works Department" was incorporated into the Bureau and renamed the "2nd Division" responsible for intelligence collection and personnel training