Conquering Self Defense Forces of the Sierra Nevada (ACSN)

Conquering Self Defense Forces of the Sierra Nevada (ACSN) The Conquering Self Defense Forces of the Sierra Nevada (Autodefensas Conquistadoras de la Sierra Nevada – ACSN), also known as Los Pachenca, is an armed group that emerged following the demobilization in 2006 of the paramilitary army led by Hernán Giraldo, alias “El Patrón,” on Colombia's Caribbean coast.