Partisan forces in Montenegro because of his mistakes during the uprising, including his "Leftist Errors". Tito emphasized that Đilas made mistakes because he organized a frontal struggle of armies against a much stronger enemy instead of connecting the Partisan struggle with the people's uprising and adopting the partisan methods of resistance. Đilas was appointed as editor of the paper Borba, the Party's main propaganda organ. The uprising continued to a reduced extent until December 1941. Aftermath The population of Serbia also turned against the uprising and communist insurgents because of their repression and intention to carry on a communist revolution. The Partisans moved from Serbia to Bosnia (nominally NDH) and joined their comrades who had already left Montenegro. Together, they made up the First Proletarian Brigade established by Tito on 21 December 1941, in Rudo, southeastern Bosnia. On 20 December 1941, Draža Mihailović, a prominent Chetnik leader later supported by the Yugoslav government-in-exile, appointed Đurišić as the commander of all regular and reserve troops in central and eastern Montenegro and parts of the Sandžak. On 21 December 1941, the Italians declared that they would hold Montenegro responsible if their troops were attacked again. In the second half of December 1941, Đurišić and Lašić began the mobilization and establishment of armed units separated from Partisans. By the middle of January 1942 these units were in armed conflict with Partisans. On 12 January 1942, the Italians specified how they intended to punish the Montenegrins in case of attack on Italian forces: 50 civilians would be executed for every killed or wounded Italian officer. In the case of regular soldiers, 10 civilians would be killed. Biroli was proclaimed a war criminal because of the crimes committed by the Italian forces commanded by him in Montenegro. In February 1942, the Italians estimated that there were about 8,000 Partisans and 5,000 Chetniks operating in Montenegro. In early March 1942, Đurišić arranged one of the first collaboration agreements between the Italians and the Chetniks. This agreement was with Biroli, and related to the area of operations of the 19th Infantry Division Venezia. In May 1942, Đurišić attacked and defeated the last significant Partisan detachment in Montenegro. Partisan forces were pushed out from most of Montenegro. As they retreated, they pillaged and burned villages that did not support them. The towns remained under Italian occupation while Chetniks were allowed to control the rest of Montenegro. The Partisans