Règle correspondante
Sierra Leone
Practice Relating to Rule 90. Torture and Cruel, Inhuman or Degrading Treatment
Sierra Leone’s Instructor Manual (2007) states:
[T]here are certain human rights that can never be suspended no matter the situation. These are referred to as hard-core rights and they include … the prohibition of cruel, inhuman and degrading treatment [and] freedom from torture … Hard core rights are protected under the LoAC as well. 
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. 18.
[emphasis in original]
The manual further states: “The torture of prisoners is a war crime.” 
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. 34.
Sierra Leone’s Geneva Conventions Act (2012) states:
2. Grave breaches of the [1949 Geneva] Conventions and the [1977] First [Additional] Protocol.
(1) A person of whatever nationality commits an offence if that person, whether within or outside Sierra Leone[,] commits, aids, abets or procures any other person to commit a grave breach specified in –
(a) article 50 of the First Geneva Convention [on, inter alia, the grave breach of torture or inhuman treatment];
(b) article 51 of the Second Geneva Convention [on, inter alia, the grave breach of torture or inhuman treatment];
(c) article 130 of the Third Geneva Convention [on, inter alia, the grave breach of torture or inhuman treatment];
(d) article 147 of the Fourth Geneva Convention [on, inter alia, the grave breach of torture or inhuman treatment]. 
Sierra Leone, Geneva Conventions Act, 2012, Section 2(1)(a)–(d).