Northwestern Bloc of the FARC-EP

The Northwestern Bloc of the Revolutionary Armed Forces of Colombia, also known as the Iván Ríos Bloc has historically been a strong influence in the Medellín and Antioquia regions, and still is today. It has been among the blocs most seriously targeted by former president Álvaro Uribe's defense plan and the Colombian Army's offensive. Due to this, the bloc has been forced to retreat to more remote areas of the countryside and has lost the dominance it once had in the area. The specific divisions of the group are arguable. Because of the current conflict existing in the country, much of the information recovered is conflicting. 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.

This mobile column is composed of around 300 members. It operates mainly in el Nudo de Paramillo, Yarumal, Valdivia and Anorí.

Also known as the Antonio Nariño Front, this front is composed by up to 350 combatants and operates mostly in the Urabá region of the Antioquia Department.

Also known as the Atanasio Girardot Front, this front is composed 45 to 50 combatants and operates mostly in the Antioquia Department. The Colombian military claims that this front has now been dismantled but NGO Nuevo Arco Iris said in 2012 the front is still active

This front is composed by up to 150 combatants and operates mostly in the Córdoba Department.

Also known as the Alberto Martínez Front, this front is composed by up to 250 combatants and operates mostly in the Chocó and Antioquia Departments.

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