Related Rule
Switzerland
Practice Relating to Rule 44. Due Regard for the Natural Environment in Military Operations
Switzerland’s Regulation on Legal Bases for Conduct during an Engagement (2005) states: “Care shall be taken in warfare to protect the natural environment against widespread, long-term and severe damage”. 
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, § 217.