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Colombia
Practice Relating to Rule 19. Control during the Execution of Attacks
Colombia’s Basic Military Manual (1995) states: “An attack shall be suspended or cancelled if it appears that it will cause superfluous damage to civilians and civilian objects regarding the expected military advantage.” 
Colombia, Derecho Internacional Humanitario – Manual Básico para las Personerías y las Fuerzas Armadas de Colombia, Ministerio de Defensa Nacional, 1995, p. 47.
Colombia’s Operational Law Manual (2009) states:
3. Fundamental guarantees and IHL principles
These guarantees have been embodied in principles that guide behaviour during situations of hostilities and must be observed throughout all military operations:
- Principle of proportionality:. … An attack must be cancelled or suspended until specific measures can be taken to avoid or minimize civilian casualties, if there are indications that the attack may cause excessive damage. …
4. Rules for the conduct of hostilities
b. Precautions in attack and against the effects of attacks
The principle of precaution requires that military operations be carried out with constant care to spare the civilian population and civilian objects. The following rules, which must be taken into account when planning a military operation, derive from this principle:
- Take all feasible precautions to cancel or suspend an attack if it becomes apparent that the objective is not a military objective or that the attack may be expected to cause loss of life or injuries among the civilian population or damage to civilian objects that would be excessive in relation to the concrete and direct military advantage anticipated[.] 
Colombia, Manual de Derecho Operacional Manual FF.MM. 3-41 Público, Primera Edición 2009, Comando General de las Fuerzas Militares, aprobado por el Comandante General de las Fuerzas Armadas por Disposición Número 056, 7 December 2009, pp. 36–38, 40 and 52–53.
[footnotes in original omitted]
The manual also states:
e. Can there be an authorization to change the rules of engagement?
If the superior officer orders the operation to be executed within the framework of the red card rules of engagement [IHL framework], the subordinate may order that the operation be conducted with restricted use of force, if the circumstances dictate, taking into account the information available at the time and his responsibility as Commander.
In a strict sense, there is no change to the ROEs [rules of engagement] but rather a new operation. 
Colombia, Manual de Derecho Operacional Manual FF.MM. 3-41 Público, Primera Edición 2009, Comando General de las Fuerzas Militares, aprobado por el Comandante General de las Fuerzas Armadas por Disposición Número 056, 7 December 2009, p. 111.