Related Rule
Practice Relating to Rule 19. Control during the Execution of Attacks
Madagascar’s Military Manual (1994) states: “A commander must suspend or cancel an attack if, in the course of the attack, it becomes apparent that the target or objective is not a military one.” 
Madagascar, Le Droit des Conflits Armés, Ministère des Forces Armées, August 1994, Fiche No. 6-O, § 27.