1 General Part
CHAPTER II- CRIMINAL RESPONSIBILITY
Article 21 Exercising a right or fulfilling a duty
A person bears no criminal responsibility if he acts to exercise rights or fulfill duties determined by law or an order ruled by a competent authority, unless the order is obviously unlawful.
When the criminal act is committed as a result of an unlawful order, then the person who has given such an order shall be held responsible.
Manifestly unlawful order
Superior orders - national proceedings
EDIT.