Related Rule
Colombia
Practice Relating to Rule 28. Medical Units
Colombia’s Circular on Fundamental Rules of IHL (1992) states that the protection due to the wounded and sick “also covers, as such, … medical establishments”. 
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, § 3.
Colombia’s Basic Military Manual (1995) states that “attacks, misappropriation and destruction” of medical units constitutes a “grave breach”. 
Colombia, Derecho Internacional Humanitario – Manual Básico para las Personerías y las Fuerzas Armadas de Colombia, Ministerio de Defensa Nacional, 1995, p. 26, § 4; see also p. 29, § 2(a).
Colombia’s Military Penal Code (1999) provides a prison sentence for “anyone who during military service and without proper cause … attacks hospitals or poorhouses which are properly marked”. 
Colombia, Military Penal Code, 1999, Article 174.
In 2007, in the Constitutional Case No. C-291/07, the Plenary Chamber of Colombia’s Constitutional Court stated that the obligation in the 1977 Additional Protocol II to protect medical units “has attained customary status, mainly due to its impact on State practice and on conflicts in the last decades”. 
Colombia, Constitutional Court, Constitutional Case No. C-291/07, Judgment of 25 April 2007, p. 69.