On 21 September 1941 Chetniks attacked militia guards who protected a wooden bridge on the railway between Olovo and
Kladanj. They killed one and imprisoned 9 militiamen, without damaging the bridge. On 29 September Chetniks burned wooden bridge between Olovo and
Zavidovići. On 28 October parts of Partisan Romanija Detachment in cooperation with Chetniks captured village
Knežina after three days of fighting.
Croatian Home Guard and Muslim militiamen fled Knežina and retreated to Olovo. On 14 November 1941 Captain Sreharski Janko was appointed as commander of Olovo garrison. The 4th company of Sarajevo Reserve Battalion was commanded by Lieutenant Ante Marinković. == Forces ==