Règle correspondante
Practice Relating to Rule 37. Open Towns and Non-Defended Localities
Djibouti’s Manual on International Humanitarian Law (2004) states that the following “are currently considered as war crimes, … if committed against any person not or no longer participating in hostilities: … attacking undefended localities”. 
Djibouti, Manuel sur le droit international humanitaire et les droits de l’homme applicables au travail du policier, Ministère de l’Intérieur, Direction Générale de la Police, 2004, p. 50.