Related Rule
Belgium
Practice Relating to Rule 16. Target Verification
Belgium’s Teaching Manual for Soldiers considers that an object can be attacked only when it can reasonably be considered to be a military objective and states that armed forces should not shoot first and check later. 
Belgium, Droit de la Guerre, Dossier d’Instruction pour Soldat, à l’attention des officiers instructeurs, JS3, Etat-Major Général, Forces Armées belges, undated, p. 21.