Southern Bloc of the FARC - EP The Southern Bloc of the Revolutionary Armed Forces of Colombia was the first bloc to exist and is where the roots of the guerrilla movement lie . The bloc has been held responsible for several notorious attacks , including the infamous " donkey - bomb " , numerous attacks against military bases , as well as Íngrid Betancourt ´s kidnapping . It was also blamed by government investigators and prosecutors for the bombing of the El Nogal club . FARC itself denied that any of its members were responsible for the attack . The bloc operates in much of the area that borders with Ecuador and Peru , with some supposed incursions into foreign territory . The government suspects that many FARC leaders may be hiding in the jungles protected by the South Bloc . The specific divisions of the group are arguable . Because of the current conflict existing in the country , much of the information recovered is conflicting and cannot be taken as absolutely reliable . Some of the believed divisions or ' fronts ' , as they are commonly called , are shown below . Many of these fronts sometimes work together towards a certain mission , while others are further divided into ' columns ' and ' companies ' with a smaller number of members . For more general information see FARC - EP Chain of Command . 2nd Front . Also known as the Isaías Pardo Front , up to 120 militants form it . It operates mostly in the Nariño Department and the Caquetá Department . 3rd Front ( dismantled ) . Up to 100 militants form this front that operates mostly in the Caquetá Department and the Huila Department . Its current leadership is unclear . 13th Front . Up to 150 militants form this front that operates mostly in the Caquetá Department and the Huila Department . 14th Front . Up to 250 militants form this front that operates mostly in the Caquetá Department . It is considered one of the most important fronts of the Southern Bloc . 15th Front . Also known as the José Ignacio Mora Front , around 300 militants and 2 , 000 non - combatants form it . It operates mostly in the Caquetá Department . The group is considered responsible for Íngrid Betancourt ´s kidnapping . On March 2012 , the group was held responsible for taking a French journalist , Roméo Langlois , as an hostage during an attack in which 4 Colombian soldiers were killed . Langlois was released a month later . 32nd Front . Up to 170 militants form this front that operates mostly in the Putumayo Department and the Caquetá Department . 48th Front . Also known as the Antonio José de Sucre , up to 450 militants form it . It operates mostly in the Putumayo Department . The group is very active in the border with Ecuador and was suspected of sheltering Raúl Reyes before his death in a Colombian cross border raid on 01 March 2008 . On September 19 , 2010 , the National Police reported the death of more than 20 guerrilla combatants from this front . On November 15 , 2010 , 17 body of suspected FARC members were recovered after Colombia Forces carried out a bombing in FARC 48th front . Two suspected member were children , probably kidnapped by FARC : 12 year - old Jimmy Lee , a Colombian refugee in Ecuador , and 15 year - old Doris Carolina Cadena Benarcazar , an Ecuadorian citizen from Carchi Province . Ecuador denounces the recruitment of Ecuadorean minors into the ranks of Colombia ' s FARC guerrilla group . 49th Front . Around 50 to 100 militants form this front that operates in the Cauca and Caquetá Department s . 61st Front . Also known as the Timanco Front , up to 70 militants form it . It operates mostly in the Huila Department . Mobile Column Teófilo Forero . Up to 90 specialized militants form this powerful group that operates mostly in the Huila Department and the Caquetá Department , with much urban activity around the country . Mobile Column Yesid Ortiz . According to the Colombian newspaper " El Tiempo " , the Yesid Ortiz Mobile Column was created by fusing remnants of the Teofilo Forero Mobile Column , the 3rd and 14th fronts into a single group which were weakened by the Military of Colombia as part of the Plan Patriota . The main objective of this unit according to " El Tiempo " is to recover lost territory in the Department of Caqueta .