Related Rule
Ukraine
Practice Relating to Rule 9. Definition of Civilian Objects
III. Military Manuals
Ukraine’s IHL Manual (2004) states:
Civilian objects are all objects which are not military objectives. Objects that are normally civilian may become military objectives depending on the situation … In case of doubt whether a civilian object is being used for military purposes, it shall be presumed to be civilian. 
Ukraine, Manual on the Application of IHL Rules, Ministry of Defence, 11 September 2004, § 1.2.46.
The manual further states that “civil objects” are protected by international humanitarian law. 
Ukraine, Manual on the Application of IHL Rules, Ministry of Defence, 11 September 2004, § 1.2.51.