Siege of Budapest
Command passed to General Hermann Balck in 23 December 1944. In December 1944, one of the 6th Army's subordinate units, the IX SS Mountain Corps, was encircled in Budapest. IV SS Panzer Corps was transferred to the 6th Army's command and a series of relief attempts, codenamed Operation Konrad, was launched during the 46-day-long Siege of Budapest.