It was launched from the area of Bihać on 13 September 1995 , against the Army of Republika Srpska ( `` Vojska Republike Srpske '' – VRS ) , and involved Participation advances towards Bosanski Petrovac , Sanski Most and Bosanska Krupa .

In the spring of 1942 , Yugoslav Partisans in central and west Bosnia liberated Change_of_leadership Bosanski Petrovac , Drvar , Glamoč and Prijedor .