▁Republic ▁of ▁Y ug oslav ia ▁wr . ▁ ▁March ▁has ▁a ▁role ▁in ▁formal ▁cer emon ies ▁role ▁and ▁it ▁was ▁widely ▁used ▁during ▁period ▁of ▁the ▁Social ist ▁Federal ▁Republic ▁of ▁Y ug oslav ia ▁when ▁it ▁was ▁played ▁after ▁the ▁national ▁anth em ▁on ▁reception s ▁of ▁the ▁Y ug oslav ▁president ▁Jos ip ▁Bro z ▁T ito ▁and ▁guests ▁in ▁Y ug oslav ia . ▁Bes ide ▁cer emon ial ▁use , ▁this ▁march ▁was ▁also ▁sometimes ▁played ▁in ▁concert s ▁as ▁for ▁example ▁by ▁Š iben ik ▁and ▁Tro g ir ▁people ' s ▁or chestra ▁on ▁May ▁ 5 , ▁ 1 9 5 7 ▁and ▁by ▁Police ▁Band ▁of ▁the ▁Ministry ▁of ▁Inter ior ▁of ▁Repub lika ▁Sr ps ka ▁on ▁November ▁ 2 1 , ▁ 2 0 1 8 . ▁ ▁Cont ro vers y ▁ ▁Author ▁of ▁the ▁march ▁is ▁uncertain , ▁as ▁is ▁the ▁origin ▁of ▁the ▁march . ▁The ▁possible ▁origin ▁of ▁the ▁march ▁is ▁divided ▁between ▁two ▁compos ers ▁in ▁time ▁of ▁the ▁World ▁War ▁II , ▁Fer do ▁Pom yk alo ▁and ▁Ant un ▁Kop it ović , ▁more ▁known ▁as ▁An te . ▁The ▁political ▁differences ▁between ▁these ▁two ▁compos ers ▁of ▁the ▁same ▁era ▁makes ▁for ▁controvers y ▁because ▁Pom yk alo ▁was ▁a ▁Y ug oslav ▁part isan ▁and ▁illegal ▁f ighter , ▁while ▁Kop it ović ▁was ▁loyal ▁to ▁Independent ▁State ▁of ▁Cro atia . ▁One ▁suggested ▁version ▁of ▁origin ▁is ▁that ▁during ▁the ▁end