It first fought on the Syrmian Front, and after its breakthrough in mid-April, liberated the western part of Yugoslavia with other units of the Yugoslav army. It liberated Zagreb on May 8, together with parts of the 2nd Army. Then, with four divisions, it liberated northern Slovenia, encircled and captured the enemy Army and reached the Austrian border on 13 May. There, along with units of the 2nd and 3rd Armies and 4th Operational Zone, it participated in the last battles of World War II on European soil, more than a week after the German surrender on 8 May.