Operation Jackal ( , Операција Чагаљ ) , also known as Operation June Dawns ( Operacija Lipanjske zore , Операција Липањске зоре ) , was an offensive of the Bosnian War fought Hostile_encounter between a combined Croatian Army ( HV ) and Croatian Defence Council ( HVO ) army against the Army of Republika Srpska ( VRS ) from 7–26 June 1992 .