Schedule 1—Amendment of the Criminal Code Act 1995
Chapter 8—Offences against humanity and related offences
Division 268—Genocide, crimes against humanity, war crimes and crimes against the administration of the justice of the International Criminal Court
Subdivision E—Other serious war crimes that are committed in the course of an international armed conflict
268.40 War crime—killing or injuring a person who is hors de combat
(1) A person (the perpetrator) commits an offence if:
(a) the perpetrator kills one or more persons; and
(b) the person or persons are hors de combat; and
(c) the perpetrator knows of, or is reckless as to, the factual circumstances that establish that the person or persons are hors de combat; and
(d) the perpetrator’s conduct takes place in the context of, and is associated with, an international armed conflict.
Penalty: Imprisonment for life.
(2) A person (the perpetrator) commits an offence if:
(a) the perpetrator injures one or more persons; and
(b) the person or persons are hors de combat; and
(c) the perpetrator knows of, or is reckless as to, the factual circumstances that establish that the person or persons are hors de combat; and
(d) the perpetrator’s conduct takes place in the context of, and is associated with, an international armed conflict.
Penalty for a contravention of this subsection: Imprisonment for 25 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.