Règle correspondante
Colombia
Practice Relating to Rule 1. The Principle of Distinction between Civilians and Combatants
Section B. Attacks against combatants
Colombia’s Circular on Fundamental Rules of IHL (1992) states: “Neither the civilian population, as such, nor individual civilians may be made the object of attack. Attacks may only be directed against military objectives.” 
Colombia, Transcripción Normas Fundamentales del Derecho Humanitario Aplicables en los Conflictos Armados, Circular No. 033/DIPL-SERPO-526, Policía Nacional, Dirección General, Santafé de Bogotá, 14 May 1992, § 7.
Colombia’s Instructors’ Manual (1999) states that it is a rule of combat to “fight only combatants”. 
Colombia, Derechos Humanos & Derecho Internacional Humanitario – Manual de Instrucción de la Guía de Conducta para el Soldado e Infante de Marina, Ministerio de Defensa Nacional, Oficina de Derechos Humanos, Fuerzas Militares de Colombia, Santafé de Bogotá, 1999, p. 15.
In reaction to an article in the press, the Office of the Human Rights Adviser in the Office of the President of Colombia stated:
In a non-international armed conflict, civilians can take up arms and form armed rebel groups, putting themselves outside the laws of the country. They thus become combatants which the State can attack and fight against with perfect legitimacy. As a result, such rebels are criminals and combatants at the same time. 
Colombia, Presidencia de la República de Colombia, Consejería para los Derechos Humanos, Comentarios sobre el artículo publicado en La Prensa por Pablo E. Victoria sobre el Protocolo II, undated, § 5, reprinted in Congressional record concerning the enactment of Law 171 of 16 December 1994.
Colombia’s Defensoría del Pueblo (Ombudsman’s Office), with respect to “convivir”, considered that:
These organizations, nurtured by the national government itself, contribute nothing to the immunity of the civilian population, since they involve citizens in the armed conflict, divesting them of their protected status and making them into legitimate targets of attack … In the view of the Ombudsman’s Office, the operation of the Convivir cooperatives means that civilians participate directly in the armed conflict, thereby becoming combatants. 
Colombia, Defensoría del Pueblo, Cuarto informe anual del defensor del pueblo al congreso de Colombia, Santafé de Bogotá, September 1997, pp. 48–49.
The Report on the Practice of Colombia states:
In Colombia, communal guard and private security services have been created under the name “convivir”. These services take the form of rural security cooperatives composed of individuals whom the State has authorized to bear arms, and who collaborate with the authorities by providing information to the public security forces concerning the activities of the guerrilla organizations. There is a public debate over the question of whether the members of these services should be considered civilians or combatants. 
Report on the Practice of Colombia, 1998, Chapter 1.2.