Related Rule
Practice Relating to Rule 87. Humane Treatment
Section B. Civilians
Switzerland’s Military Manual (1984) provides that the enemy civilian population is to be treated with humanity. 
Switzerland, Lois et coutumes de la guerre (Extrait et commentaire), Règlement 51.7/II f, Armée Suisse, 1987, Articles 4 and 146; Military Manual (1984), p. 34; Droit des gens en temps de guerre, Programme d’instruction fondé sur le Manuel 51.7/III “Lois et coutumes de la guerre”, Cours de base pour recrues de toutes les armes 97.2f, Armée suisse, 1986, p. 43.
Switzerland’s Regulation on Legal Bases for Conduct during an Engagement (2005) states: “Foreign civilians or civilians of an adverse party to a conflict are specifically protected under the law of armed conflict. If they are in the hands of a military unit, they must at all times be treated humanely.” 
Switzerland, Bases légales du comportement à l’engagement (BCE), Règlement 51.007/IVf, Swiss Army, issued based on Article 10 of the Ordinance on the Organization of the Federal Department for Defence, Civil Protection and Sports of 7 March 2003, entry into force on 1 July 2005, § 198.
(emphasis in original)