Related Rule
France
Practice Relating to Rule 19. Control during the Execution of Attacks
France’s LOAC Manual (2001) states: “The law of armed conflict obliges commanders to take precautionary measures in the preparation and execution of attacks in order to limit their effects and to make sure they have no indiscriminate effects.” 
France, Manuel de droit des conflits armés, Ministère de la Défense, Direction des Affaires Juridiques, Sous-Direction du droit international humanitaire et du droit européen, Bureau du droit des conflits armés, 2001, p. 28.
(emphasis added)