 Đurišić maintained contact with Lukačević , who at that time had begun to attack the Germans in Herzegovina with his own forces . Đurišić considered the possibility of joining Lukačević in fighting the Germans in anticipation of an Allied landing . However , because Lukačević was quickly defeated and no Allied landing occurred , Đurišić remained tied to the Germans . German intelligence closely tracked Đurišić 's communications and movements , and German commands continued to make use of his forces . The Germans counted Đurišić 's Chetniks as part of Army Group E in a survey of available forces dated 16 November 1944 . In the survey , German forces in Montenegro at that time were estimated at 47 @,@ 000 soldiers , including Đurišić 's 10 @,@ 000 Chetniks . On 21 October 1944 , the Partisans took the Grahovo garrison after a five @-@ day battle . On 6 November , the Partisans surrounded Cetinje , which was defended by the Germans , Black Shirts , and about 600 Chetniks . On 8 November , the Germans and Chetniks in Cetinje were reinforced with a formation of 800 – 1 @,@ 000 Chetniks led by Đurišić , which eventually succeeded in breaking through the Partisan blockade . 
