Operation Winter '94 was the first in a series of successful advances Cause_to_make_progress made by the HV and the HVO in or near the Livanjsko field , an elongated flat-bottomed valley surrounded Surrounding by hills .

Operation Winter '94 pushed Motion back the front line of the VRS by about , capturing Conquering much of the Livanjsko field .

The improved Croatian dispositions around Livanjsko field provided Supply a springboard for further offensive action on this front during Operation Summer '95 .

Operation Summer '95 ( , Операција Љето '95 ) was a joint military Military_operation offensive of the Croatian Army ( HV ) and the Croatian Defence Defending Council ( HVO ) that took place Process_start north-west of the Livanjsko Polje , and around Bosansko Grahovo and Glamoč in western Bosnia and Herzegovina .