Соответствующая норма
Practice Relating to Rule 108. Mercenaries
Section B. Status of mercenaries
Croatia’s Criminal Code (1997), as amended to 2006, states: “Whoever, with an aim to acquire material gain, directly participates as a mercenary in an armed conflict or a joint act of violence shall be punished by imprisonment for six months to five years.” 
Croatia, Criminal Code, 1997, as amended in June 2006, Article 167b(2).