القاعدة ذات الصلة
Switzerland
Practice Relating to Rule 8. Definition of Military Objectives
Section D. Weapons and weapon systems
Switzerland’s Regulation on Legal Bases for Conduct during an Engagement (2005) explains with respect to the example of a “[m]ortar site, two civilian women are supplying beverages” that, in application of the principles of distinction and proportionality, the “mortar site can be attacked as a military objective: collateral damage”. 
Switzerland, Bases légales du comportement à l’engagement (BCE), Règlement 51.007/IVf, Swiss Army, issued based on Article 10 of the Ordinance for the Organization of the Federal Department for Defence, Civil Protection and Sports of 7 March 2003, entry into force on 1 July 2005, § 172.
With respect to the example of a “[b]attle tank accommodating wounded persons”, the Regulation further explains that, in application of the principle of military necessity, the tank is “not a protected object. Military objective, collateral damage”. 
Switzerland, Bases légales du comportement à l’engagement (BCE), Règlement 51.007/IVf, Swiss Army, issued based on Article 10 of the Ordinance for the Organization of the Federal Department for Defence, Civil Protection and Sports of 7 March 2003, entry into force on 1 July 2005, § 172.