Chapter 5
Miscellaneous
Schedule 1
Crimes
Part 3
War Crimes
'War crimes' mean any of the following:
(e) 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 conduct:
(vii) conscripting or enlisting children under the age of 15 years into armed forces or groups or using them to participate actively in hostilities.
Conscripting children under 15 into armed forces or groups - NIAC
Enlisting children under 15 into armed forces or groups - NIAC
Using children under 15 to participate actively in hostilities - NIAC
EDIT.