Related Rule
Sierra Leone
Practice Relating to Rule 72. Poison and Poisoned Weapons
Sierra Leone’s Instructor Manual (2007) provides: “It is prohibited to … [u]se poison or poisonous weapons.” 
Sierra Leone, The Law of Armed Conflict. Instructor Manual for the Republic of Sierra Leone Armed Forces (RSLAF), Armed Forces Education Centre, September 2007, p. 44; see also p. 19.