In the early 1990s , the Commission on the Truth for El Salvador ( UNTC ) investigated war crimes during the civil war . Their report concludes that the Battalion was responsible for the El Mozote massacre , the El Calabozo massacre , and the murder of six Jesuit priests . The Battalion was also implicated in the killing of " some 50 civilians on the banks of the Guaslinga river "
El Mozote massacre
El Mozote massacre
Atlacatl Battalion