Related Rule
Yugoslavia, Socialist Federal Republic of
Practice Relating to Rule 145. Reprisals
Section C. Proportionality of reprisals
The Socialist Federal Republic of Yugoslavia’s Military Manual (1988) states: “Reprisals may be undertaken by application of the same or similar measures. The consequences of such measures must be proportionate to the consequences that the enemy caused by violating the laws of war.” 
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, § 27.
The manual further states:
When reprisals are undertaken, care must be taken that they be in proportion to the seriousness of the violations committed by the enemy, that is, that the seriousness of the reprisals undertaken corresponds to the seriousness of the violations of the laws of war committed by the enemy. 
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, § 29.