Соответствующая норма
Yugoslavia, Federal Republic of
Practice Relating to Rule 136. Recruitment of Child Soldiers
The Federal Republic of Yugoslavia’s Army Act (1994) states that military conscription duty falls in the year when a draftee is to become 18, but a conscript may be recruited when he is turning 17 on personal request or under an order of the President in case of war. 
Yugoslavia, Federal Republic of, Army Act, 1994, Article 291.