err illas ▁in ▁the ▁ 1 9 7 0 s . ▁ ▁Among ▁the ▁killed ▁and ▁disappeared ▁during ▁the ▁military ▁regime ▁were ▁at ▁least ▁ 6 6 3 ▁Marx ist ▁M IR ▁gu err illas . ▁The ▁M IR ▁commander , ▁And rés ▁Pascal ▁All ende , ▁has ▁admitted ▁that ▁the ▁Marx ist ▁gu err illas ▁lost ▁ 1 , 5 0 0 - 2 , 0 0 0 ▁f igh ters ▁killed ▁or ▁disappeared . ▁Many ▁gu err illas ▁conf essed ▁under ▁tort ure ▁and ▁several ▁hundred ▁other ▁young ▁men ▁and ▁women , ▁sympath etic ▁to ▁the ▁gu err illas , ▁were ▁det ained ▁and ▁tort ured ▁and ▁often ▁killed . ▁Near ly ▁ 7 0 0 ▁civ ili ans ▁disappeared ▁in ▁the ▁ 1 9 7 4 - 1 9 7 7 ▁period , ▁after ▁being ▁det ained ▁by ▁the ▁Chile an ▁military ▁and ▁police . ▁Rem n ants ▁of ▁the ▁M IR ▁also ▁joined ▁Marx ist ▁gu err illas ▁from ▁the ▁People ' s ▁Revolution ary ▁Army ▁( Ar gent ina ) ▁( E j ército ▁Revol uc ionario ▁del ▁P ue blo ▁or ▁ER P ) ▁in ▁Argentina ▁in ▁the ▁prot ract ed ▁fight ▁to ▁control ▁T uc um án ▁Province . ▁Some ▁ 3 0 , 0 0 0 ▁former ▁Chile an ▁cons cript s ▁that ▁served ▁between ▁ 1 9 7 3 ▁and ▁ 1 9 9 0 , ▁claim ing ▁to ▁be ▁suffering ▁from ▁post - tra um atic ▁stress ▁after ▁taking ▁part ▁in ▁the ▁cord