Related Rule
Practice Relating to Rule 155. Defence of Superior Orders
The Report on the Practice of Croatia states:
The position of the Croatian criminal law is that the superior order is not a valid defence against violations of international humanitarian law nor any other crime in general. To be found guilty for the offence it is not required that [the] subordinate … knows that he has the right to disobey “unlawful” order[s], but that he has to know that an act committed constitutes a crime or that the criminal character of the act must be obvious from the circumstances. 
Report on the Practice of Croatia, 1997, Chapter 6.9.