CROATIA CRIMINAL CODE
SPECIAL PART
CHAPTER THIRTEEN (xiii) - CRIMINAL OFFENSES AGAINST VALUES PROTECTED BY INTERNATIONAL LAW
Article 164
(1) Whoever, in violation of the rules of international law, in time of war or armed conflict, insults, maltreats or restrains an intermediary or his escort or prevents their return or in some other way infringes their inviolability shall be punished by imprisonment for six months to five years.
Unique provision - NIAC
National penalties - war crimes
EDIT.