Règle correspondante
Practice Relating to Rule 7. The Principle of Distinction between Civilian Objects and Military Objectives
Section A. The principle of distinction
Croatia’s LOAC Compendium (1991) instructs soldiers:
Always make a difference between:
a) Combatants and civilians
b) Military targets and civilians. 
Croatia, Compendium “Law of Armed Conflicts”, Republic of Croatia, Ministry of Defence, 1991, p. 37.