 In October 1941 , Mihailović appointed Đurišić as his commander for all regular and reserve troops in central and eastern Montenegro and parts of the Sandžak . In early November , the nationalist leaders in Montenegro quickly became aware of the split between the Chetniks and Partisans in Serbia ; later that month they sent Đurišić to visit Mihailović . During this visit , Đurišić received verbal orders from Mihailović and was appointed as the commander of all Chetnik detachments in the Sandžak . Lašić was appointed commander of all Chetnik forces in Old Montenegro . Đurišić 's appointment was also included as part of instructions dated 20 December 1941 that were received from Mihailović . The instructions included the following objectives : 
