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Philippines
Practice Relating to Rule 9. Definition of Civilian Objects
The Philippine Army Soldier’s Handbook on Human Rights and International Humanitarian Law (2006) notes in its glossary:
Civilian objects – any object which is not a military objective. Objects which are normally civilian objects can, according to the military situation, become military objectives (e.g. house or bridge tactically used by the defender and thus a target for an attacker). In case of doubt whether an object which is normally dedicated to civilian purposes (e.g. a place of worship, a house or dwelling, a school) is a military objective or not, it shall be considered as a civilian object. 
Philippines, Philippine Army Soldier’s Handbook on Human Rights and International Humanitarian Law, A Practical Guide for Internal Security Operations, 2006, p. 67, Glossary.