Related Rule
Burundi
Practice Relating to Rule 108. Mercenaries
Burundi’s Penal Code (1981) states:
The term “mercenary” refers to any person:
1° who is specifically recruited within the country or abroad to fight in an armed conflict;
2° who in fact takes a direct part in hostilities;
3° who takes a direct part in hostilities in order to obtain a personal advantage and to whom material compensation has been promised by a party to the armed conflict or in their name;
4° who neither stems from a party to the conflict nor is resident within territory controlled by a party to the conflict;
5° who is not a member of the armed forces of a party to the conflict;
6° who has not been sent on official mission as member of the armed forces of a State who is not a party to the conflict. 
Burundi, Penal Code, 1981, Article 409.
Burundi’s Penal Code (2009) states:
The term mercenary means any person who:
1°. Is specially recruited locally or abroad in order to fight in an armed conflict;
2°. Does, in fact, take a direct part in the hostilities;
3°. Is motivated to take part in the hostilities by the desire for private gain and, in fact, is promised by or on behalf of a party to the conflict, material compensation;
4°. Is neither a national of a party to the conflict nor a resident of territory controlled by a party to the conflict;
5°. Is not a member of the armed forces of a party to the conflict;
6°. Has not been sent by a State which is not a party to the conflict on official duty as a member of its armed forces. 
Burundi, Penal Code, 2009, Article 581.