Occurring from 31 October to 4 November 1991 , during the Croatian War Hostile_encounter of Independence , the operation was a Croatian victory and its success set the stage for follow-up advances by Croatian forces Military_operation on Papuk Mountain in Operation Papuk-91 in late November and December .

By the end Process_end of the year the HV gained Getting control Control of Papuk , securing transport Sending routes between eastern Slavonia and the rest of Croatia .