Units of the army broke through German defences north of Székesfehérvár in conjunction with the 4th Guards Army. Advancing in the left flank and rear of the 6th Panzer Army, the 9th Guards Army broke through other German units between Lake Balaton and Velence. For the assault on Vienna, the army's 39th Guards Rifle Corps would follow the attack of the 6th Guards Army in the southwestern sector.