القاعدة ذات الصلة
Switzerland
Practice Relating to Rule 129. The Act of Displacement
Section B. Evacuation of the civilian population
Switzerland’s Basic Military Manual (1987) provides: “Belligerents shall conclude special agreements in order to evacuate the wounded, sick, infirm, elderly … and maternity cases … from besieged areas.” 
Switzerland, Lois et coutumes de la guerre (Extrait et commentaire), Règlement 51.7/II f, Armée Suisse, 1987, Article 33.
The manual states, however:
A total or partial evacuation of a given occupied area may be undertaken if the security of the population or imperative military reasons so demand … In principle, such transfers must only take place within the occupied territory. 
Switzerland, Lois et coutumes de la guerre (Extrait et commentaire), Règlement 51.7/II f, Armée Suisse, 1987, Article 176.