Related Rule
Benin
Practice Relating to Rule 139. Respect for International Humanitarian Law
Section B. Orders and instructions to ensure respect for international humanitarian law
Benin’s Military Manual (1995) states that missions assigned to subordinates “shall contain the details necessary to ensure respect for the law of war”. 
Benin, Le Droit de la Guerre, III fascicules, Forces Armées du Bénin, Ministère de la Défense nationale, 1995, Fascicule III, p. 10.