Milošević and Radovan Karadžić , the president of the self-proclaimed Republika Srpska , used the subordinate Chetnik forces of Šešelj and Ražnatović as part of their plan to expel non-Serbs and form a Greater Serbia through the use of ethnic cleansing , terror , and demoralization . Šešelj 's and Ražnatović 's formations acted as " autonomous " groups in the RAM Plan which sought to organize Serbs outside Serbia , consolidate control of the Serbian Democratic Parties ( SDS ) , and prepare arms and ammunition in an effort to establish a country where " all Serbs with their territories would live together in the same state . " According to historian Noel Malcolm the " steps taken by Karadžić and his party – declaring Serb " Autonomous Regions " , the arming of the Serb population , minor local incidents , non-stop propaganda , the request for federal army " protection " – matched exactly what had been done in Croatia . Few observers could doubt that a single plan was in operation . " Chetnik units engaged in mass murders and war crimes . In 1991 , the Croatian town of Erdut was forcefully taken over by the SDG and JNA and annexed to the puppet state of Republic of Serbian Krajina . Croats and other non-Serbs were either expelled or killed with Serbs repopulating empty villages in the area . On 1 April 1992 , the SDG attacked Bijeljina and carried out a massacre of Muslim civilians . On 4 April , Chetnik irregulars helped the JNA in shelling Sarajevo . On 6 April , Chetniks and the JNA attacked Bijeljina , Foča , Bratunac , and Višegrad . On 9 April , the SDG and Šešelj 's Chetniks aided the JNA and special units of the Serbian security force in overtaking Zvornik and ridding it of its local Muslim population
massacre
Bijeljina massacre
Chetniks