Related Rule
Burundi
Practice Relating to Rule 46. Orders or Threats That No Quarter Will Be Given
Burundi’s Regulations on International Humanitarian Law (2007) states that “it is prohibited to order that there will be no survivors, to threaten the adversary therewith or to conduct operations on that basis.” 
Burundi, Règlement n° 98 sur le droit international humanitaire, Ministère de la Défense Nationale et des Anciens Combattants, Projet “Moralisation” (BDI/B-05), August 2007, Part I bis, p. 16; see also Part I bis, pp. 32, 41, 81 and 94.
The Regulations also states: “Prohibited methods of combat: … [include] denial of quarter”. 
Burundi, Règlement n° 98 sur le droit international humanitaire, Ministère de la Défense Nationale et des Anciens Combattants, Projet “Moralisation” (BDI/B-05), August 2007, Part I bis, p. 2; see also Part I bis, p. 53.
Burundi’s Law on Genocide, Crimes against Humanity and War Crimes (2003) states:
[The following are] considered as war crimes:
B. Other serious violations of the laws and customs applicable in international armed conflicts, within the established framework of international law, namely, any of the following acts:
l) declaring that no quarter will be given;
D. Other serious violations of the laws and customs applicable in armed conflicts not of an international character, within the established framework of international law, namely, any of the following acts:
j) declaring that no quarter will be given. 
Burundi, Law on Genocide, Crimes against Humanity and War Crimes, 2003, Article 4(B)(l) and (D)(j).
Burundi’s Penal Code (2009) states:
“War crimes” means crimes which are committed as part of a plan or policy or as part of a large-scale commission of such crimes, in particular:
2. … [S]erious violations of the laws and customs applicable in international armed conflict, within the established framework of international law, namely, any of the following acts:
12°. Declaring that no quarter is given;
5. … [S]erious violations of the laws and customs applicable in armed conflicts not of an international character, within the established framework of international law, namely, any of the following acts:
10°. Declaring that no quarter is given. 
Burundi, Penal Code, 2009, Article 198(2)(12°) and (5)(10°).