 Starting from mid-February, the division was part of the Soviet reserve force during the German Operation Frühlingserwachen, east of Lake Balaton, in which the 6th SS Panzer Army was trying to get through Soviet defenses.On March 16, 1945, the Wehrmacht's offensive was stopped, and an offensive on Vienna was launched immediately afterwards.The 100th Division had the task of "cleaning up" encircled pockets of German resistance.