Colombia
Practice Relating to Rule 9. Definition of Civilian Objects
Colombia’s Instructors’ Manual (1999) states:
A civilian object … is every object that is not a military objective. … In sum, it may be said that civilian objects are those objects which by their nature, location, purpose or use do not make an effective contribution to military action and whose total or partial destruction, capture or neutralization, in the circumstances ruling at the time,
do not offer a definite military advantage.

[emphasis in original]
In 2007, in the
Constitutional Case No. C-291/07, the Plenary Chamber of Colombia’s Constitutional Court stated: “Civilian objects shall be ‘any objects that cannot be legitimately considered a military objective’ [quoting
Prosecutor v. Tihomir Blaškić, Judgement, Trial Chamber I, 3 March 2000, Case No. IT-95-14-T].”