The leaders of the Kozara uprising assembled again on 10 September 1941, at the foot of Lisina. The five detachments of the Kozara Partisans were re-arranged into three companies, possessing 217 rifles altogether. At the end of September, the Kozara Partisans began attacking NDH and German troops, initially targeting weaker elements. These operations gave them military experience and they also captured weapons and ammunition from the enemy. More men joined the Partisans, and two more companies had been formed in Kozara by the end of October. The Partisans gained control over a number of villages. After a reorganization, Partisan units in Kozara were merged into the 2nd Krajina National Liberation Partisan Detachment in early November 1941. Stojanović was appointed commander of this detachment. By mid-November, it consisted of 670 men organised in six companies and armed with 510 rifles, 5 light machine guns, and a heavy machine gun.