SCHEDULE 1 – THE CRIMINAL CODE.
PART I. – INTRODUCTORY.
Division 5. – Criminal Responsibility.
32. JUSTIFICATION AND EXCUSE : COMPULSION.
(1) A person is not criminally responsible for an act or omission done or made–
(b) in obedience to the order of a competent authority that he is bound by law to obey, unless the order is manifestly unlawful ;
Manifestly unlawful order
Superior orders - national proceedings
EDIT.