Eight years later (in 1994) the GAFEs saw action fighting EZLN guerrillas in Chiapas. There is scant public information about the operations in which they participated during that conflict. During the 1990s, the GAFE reportedly received training in commando and urban warfare from Israeli special forces and American Special Forces units, which included training in rapid deployment, marksmanship, ambushes, counter-surveillance and the art of intimidation.Grayson, George W. (2012). The Executioner's Men: Los Zetas, Rogue Soldiers, Criminal Entrepreneurs, and the Shadow State They Created (1st ed.), page 46, Transaction Publishers. It is also known that at some point several members were trained in the infamous US Army School of the Americas, in enhanced interrogation techniques and psychological warfare (Psy-Ops).
