Соответствующая норма
Practice Relating to Rule 106. Conditions for Prisoner-of-War Status
Section C. Situations where combatants cannot distinguish themselves
Cameroon’s Instructor’s Manual (2006), under the heading “Combatants”, states:
He must distinguish himself from the civilian population while he takes part in an attack or an operation preparatory to an attack. But, in a situation in which for reasons related to the nature of hostilities, a combatant cannot distinguish himself from the civilian population, he retains his status as combatant if he carries his arms openly:
a) during each military engagement;
b) for as long as he is visible to the enemy when he takes part in a military deployment. 
Cameroon, Droit des conflits armés et droit international humanitaire, Manuel de l’instructeur en vigueur dans les forces de défense, Ministère de la Défense, Présidence de la République, Etat-major des Armées, 2006, p. 210, § 512.