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 G—War crimes that are other serious violations of the laws and customs applicable in an armed conflict that is not an international armed conflict
268.88 War crime—using, conscripting or enlisting children
(3) A person (the perpetrator) commits an offence if:
(c) the perpetrator knows that, or is reckless as to whether, the person or persons are under that age; and
Recklessness
Knowledge - national proceedings
EDIT.