Article 1 Code of Crimes against International Law (CCAIL)
Part 2 Crimes against International Law
Chapter 2 War crimes
Section 8 War crimes against persons
(1) Whoever in connection with an international armed conflict or with an armed conflict not of an international character,
1. kills a person who is to be protected under international humanitarian law,
shall be punished with imprisonment for life.
Murder - NIAC
Wilful killing - IAC
EDIT.