Related Rule
Slovenia
Practice Relating to Rule 155. Defence of Superior Orders
Slovenia’s Penal Code (1994) provides:
A subordinate shall not be punished if he commits a criminal offence by order or command of a superior issued in the course of military service, unless he has committed a war crime or any other grave criminal offence or if he knew that the carrying out of the order or command constituted a criminal offence. 
Slovenia, Penal Code, 1994, Article 283.