A commander who causes serious harm to lawful enemy belligerents who have fallen into his power … by not according them the treatment prescribed by law or by international agreements … shall be punished, unless the act constitutes a more serious offence, by military confinement for not less than three years. 

Somalia has not ratified AP II [1977 Additional Protocol II] and it is therefore not directly applicable to Somalia as a matter of treaty law. The Government is aware that many provisions of AP II represent customary IHL rules and therefore apply to the situation in Somalia. Such provisions include … Article 5 prescribing humane treatment of persons whose liberty ha[s] been restricted … due to the fact that these norms are reflected in Common Article 3 of the [1949] Geneva Conventions.