Republika Srpska (1992–95) the Serb people in Bosnia and Herzegovina: At the same session, the Bosnian Serb assembly voted to create the Army of the Republika Srpska ("VRS") ("Vojska Republike Srpske"), and appointed Ratko Mladić, the commander of the Second Military District of the Yugoslav federal army, as commander of the VRS Main Staff. At the end of May 1992, after the withdrawal of Yugoslav forces from Bosnia and Herzegovina, the Second Military District was essentially transformed into the Main Staff of the VRS. The new army immediately set out to achieve by military means the six "strategic objectives" of the Serbian people
Army of the Republic of Bosnia and Herzegovina Beretke (Green Berets) and Crni Labudovi (Black Swans) units were also active. Other irregular groups included Bosnian mafia groups, as well as collections of police and former Yugoslav People's Army soldiers. The army was formed in poor circumstances, and suffered from a very limited supply of arms. Critical deficiencies included tanks and other heavy weaponry. The first commander of the army was Sefer Halilović. In 1992, the ARBiH was losing most of the battles and consequently 70% of Bosnia was under Yugoslav People's Army (JNA), later Bosnian Serb Army (VRS), control. Sarajevo was under siege. The ARBiH had defended Sarajevo