In September 1943, the 2nd and 3rd Battalions of the 10th Krajina Brigade and a battalion of the Drvar–Petrovac Partisan Detachment were directed to attack it. Bursać volunteered to throw hand grenades at the pillboxes and machine-gun nests protecting the base. Although her company commander objected because she still appeared ill, Bursać insisted on throwing the grenades.
In September 1943, the 2nd and 3rd Battalions of the 10th Krajina Brigade and a battalion of the Drvar–Petrovac Partisan Detachment were ordered to attack the target. Despite her company commander's reservations due to her apparent illness, Bursać volunteered to throw hand grenades at the pillboxes and machine-gun nests guarding the base.