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,
7. imposes on, or executes a substantial sentence in respect of a person who is to be protected under international humanitarian law, in particular the death penalty or imprisonment, without that person having been sentenced in a fair and regular trial affording the legal guarantees required by international law,
shall be punished with imprisonment for not less than two years.
Not affording judicial guarantees to the passing of sentences and the carrying out of executions - NIAC
Wilfully depriving a prisoner of war of the rights of fair and regular trial - IAC
Wilfully depriving a protected person of the rights of fair and regular trial - IAC
EDIT.