▁National ▁Liber ation ▁Army ▁( EL N ) ▁gu err illas , ▁with ▁ 8 0 % ▁committed ▁by ▁right - wing ▁par amil itar ies , ▁and ▁the ▁remaining ▁ 8 % ▁committed ▁by ▁Colomb ian ▁security ▁forces . ▁ ▁The ▁strength ▁of ▁the ▁F AR C – EP ▁forces ▁were ▁high ; ▁in ▁ 2 0 0 7 , ▁the ▁F AR C ▁said ▁they ▁were ▁an ▁armed ▁force ▁of ▁ 1 8 , 0 0 0 ▁men ▁and ▁women ; ▁in ▁ 2 0 1 0 , ▁the ▁Colomb ian ▁military ▁calculated ▁that ▁F AR C ▁forces ▁consisted ▁of ▁about ▁ 1 3 , 8 0 0 ▁members , ▁ 5 0 ▁percent ▁of ▁whom ▁were ▁armed ▁gu err illa ▁combat ants ; ▁and , ▁in ▁ 2 0 1 1 , ▁the ▁President ▁of ▁Colombia , ▁Juan ▁Manuel ▁Santos , ▁said ▁that ▁F AR C – EP ▁forces ▁compr ised ▁fewer ▁than ▁ 1 0 , 0 0 0 ▁members . ▁By ▁ 2 0 1 3 ▁it ▁was ▁reported ▁that ▁ 2 6 , 6 4 8 ▁F AR C ▁and ▁EL N ▁members ▁had ▁decided ▁to ▁dem obil ize ▁since ▁ 2 0 0 2 . ▁ ▁In ▁ 2 0 1 2 , ▁the ▁F AR C ▁made ▁ 2 3 9 ▁attacks ▁on ▁the ▁energy ▁infrastr ucture . ▁However , ▁they ▁showed ▁signs ▁of ▁fat igue . ▁By ▁ 2 0 1 4 , ▁the ▁F AR C ▁were ▁not ▁seeking ▁to ▁eng age ▁in