An Act to amend the War Crimes Act 1945
5. Sections 3 to 14, inclusive, of the Principal Act are repealed and the following section and Parts are substituted:
"(2) Subject to section 16, it is a defence if the doing by the defendant of the act alleged to be the offence:
(a) was permitted by the laws, customs and usages of war; and
(b) was not under international law a crime against humanity."
EDIT.