In the middle of May 1943, prior to the formal commencement of Case Black and in its initial phases, around 2,000 men from Lim-Sandžak Chetnik Detachment (LSCD), including Đurišić, were captured by German forces. During next couple of weeks the Italians disarmed majority of Chetniks in Montenegro, captured and interned to prison in Italy big number of Chetnik commanders, including many from the staff of LSCD. Initially, Đorđije Lašić gathered scattered groups of Chetniks on the territory that was under Đurišić's control. Lašić and Đurišić were in conflict earlier and Đurišić's former associates did not trust him. With the approval of Perhinek, they recreated Chetnik organisation and new staff of LSCD and proposed Mihailović to appoint Lukačević as their commander. Mihailović accepted this proposal and Vojislav Lukačević succeeded Đurišić as the commander of the remaining men of the detachment and, accompanied by Perhinek, came to Berane on 14 July 1943. Perhinek and Mihailović maintained continuous communication through radiotelegraphy.