[8] The North-East positions around Olovo were defended by the 4th company of Sarajevo Reserve Battalion (166 members of Croatian Home Guards) enforced by 1 machine-gun.[11] The attack started by Chetnik artillery which destroyed militia guard post killing and wounding 24 militiamen, while remaining 6 of them fled.[12] The Chetnik artillery was then aimed against the most important position of Olovo garrison, so called "Stijena" which was defended by the 4th company of Sarajevo Reserve Battalion supported by one machine gun.After being inforced by one reserve platoon this company managed to recapture "Stijena" for short time only to retreat after being attacked by more numerous Chetnik forces.[16] The post-war Yugoslav sources emphasize that on 21 January 1942 part of German 750 regiment from 718 Infantry Division recaptured Olovo after the weak resistance of Chetniks.