BOOK II
SPECIAL PART
TITLE I
CRIMES AGAINST PEACE AND HUMANITY
CHAPTER II
WAR CRIMES
Article 126. War crimes committed using prohibited methods of warfare
Any person who, within the context of an armed conflict of an international or noninternational nature :
h) Treacherously kills or injures hostile combatants ;
Killing or wounding treacherously a combatant adversary - NIAC
Killing or wounding treacherously individuals belonging to the hostile nation or army - IAC
EDIT.