A key element in the Salvadoran peace process was that demobilization of the FMLN would be accompanied by demobilization of certain military and police units which had been associated with some of the more brutal human rights violations of the ten-year civil war. To replace the old security and police forces there would be a new National Police which would include personnel from both the old police and the FMLN. These personnel had to be trained quickly, and this was the function of the "Police Division" of ONUSAL, which included officers from Chile, Mexico and Guyana, as well as several European countries.