Related Rule
Sierra Leone
Practice Relating to Rule 11. Indiscriminate Attacks
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 –
(e) … paragraph … 3 … of Article 85 of the First Protocol [on, inter alia, the grave breach of launching an indiscriminate attack affecting the civilian population or civilian objects in the knowledge that such attack will cause excessive loss of life, injury to civilians or damage to civilian objects, as defined in Article 57(2)(a)(iii) of the Protocol]. 
Sierra Leone, Geneva Conventions Act, 2012, Section 2(1)(e).