SPECIAL PART
XVII C H A P T E R S E V E N T E E N
CRIMES AGAINST HUMANITY AND VALUES PROTECTED BY INTERNATIONAL LAW
Unlawful Killing or Wounding of the Enemy
Article 177
(1) Whoever in violation of the rules of international law in the time of war or armed conflict kills or wounds an enemy who has laid down arms or unconditionally surrendered or has no means for the defence,
shall be punished by imprisonment for a term between one and ten years.
Killing or wounding a combatant who has laid down his arms and surrendered at discretion - IAC
Killing or wounding a combatant who no longer has means of defence and has surrendered at discretion - IAC
EDIT.