Norma relacionada
Indonesia
Practice Relating to Rule 3. Definition of Combatants
Indonesia’s Air Force Manual (1990) states that combatants are:
a. Regular troops, i.e. members of the armed forces, consisting of:
1. voluntary troops;
2. compulsory military; and
3. foreigners, including citizens of neutral States, who belong to a belligerent’s armed forces.
b. Militias, i.e. volunteer groups or persons who, being a part of the armed forces, should be considered as regular troops with the status of legal combatant. 
Indonesia, The Basics of International Humanitarian Law in Air Warfare, Indonesian Air Force, 1990, § 21.
The manual also states that a person who is not a member of the armed forces nor a member of a militia but participates in the hostilities is an unlawful combatant. 
Indonesia, The Basics of International Humanitarian Law in Air Warfare, Indonesian Air Force, 1990, §§ 22–23.