. "* Initially 400" . "Rebel victory" . "** 5 Home Guard" . . . . . "----" . . . . "27th July" . . . "* Deaths in the Battle for Drvar:" . . "1941-07-27" . . . . "Drvar uprising" . "----" . "* Muslim and Croatian civilians massacred in Kulen Vakuf, Trubar, Bosansko Grahovo, Vrto\u010De and Krnjeu\u0161a." . "----" . "* Unknown in the rest of uprising" . . "HQ of Guerilla Detachments for Bosnian Grahovo and Surrounding" . . . "* rebels captured the whole region of Western Bosnia" . . "** 25 Usta\u0161e" . "** 8 battallions" . "Drvar massacre" . . "* After the expansion of the uprising" . "Yugoslav Partisans" . . . . . "** several artillery batteries" . "Drvar" . "* Initially" . "Initially:" . "Drvar uprising" . . . "Italy" . "Later division:" . "uprising" . . . . "*Chetniks" . . "general uprising against the Usta\u0161e" . . . . "** 4,000 Serb rebels" . "* Reinforcements of Croatian Army" . . "** 4 detachments" . . . . . . . . "Chetniks" . . . . "*Yugoslav Partisans" .