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Yugoslavia, Socialist Federal Republic of
Practice Relating to Rule 60. Improper Use of the United Nations Emblem or Uniform
The Socialist Federal Republic of Yugoslavia’s Military Manual (1988) provides that “it is forbidden to use, during combat, in order to mislead the enemy, … internationally recognized emblems”, inter alia, the UN emblem. 
Yugoslavia, Socialist Federal Republic of, Propisi o Primeri Pravila Medjunarodnog Ratnog Prava u Oruzanim Snagama SFRJ, PrU-2, Savezni Sekretarijat za Narodnu Odbranu (Pravna Uprava), 1988, § 105(3).
Under the Socialist Federal Republic of Yugoslavia’s Penal Code (1976), as amended in 2001, “those who misuse or carry without permission the flag or emblem of the United Nations Organization” commit a war crime. 
Yugoslavia, Socialist Federal Republic of, Penal Code, 1976, as amended in 2001, Article 153(1).
The Commentary on the Penal Code specifies:
The misuse of international emblems is committed, as a rule, during a war or an armed conflict … The aggravated form of this criminal act … exists when the misuse or unauthorized use of international emblems is committed in the war operations zone. 
Yugoslavia, Socialist Federal Republic of, Penal Code, 1976, as amended in 2001, Commentary on Article 153.