Related Rule
Practice Relating to Rule 8. Definition of Military Objectives
Section E. Lines and means of communication
The Military Manual (2005) of the Netherlands states that “communication and radar installations … constitute military objectives, in all circumstances”. 
Netherlands, Humanitair Oorlogsrecht: Handleiding, Voorschift No. 27-412, Koninklijke Landmacht, Militair Juridische Dienst, 2005, § 0510.