Although it didn't receive the SS designation until after the Battle of the Bulge, the SS designation came into general use in military history literature after the Second World War for the formation as assembled prior to that campaign.
After the Ardennes Offensive, the 6th SS Panzer Army was transferred to Hungary.
In March 1945, the 6th SS Panzer Army launched Operation Frühlingserwachen. This was the German offensive around Lake Balaton.
In April 1945, towards the end of the war, the 6th SS Panzer Army defended Vienna during the Soviets Vienna Offensive.
On 8 May 1945, the 6th SS Panzer Army was in Austria in the area between Vienna and Linz.
Skorzeny Brigade 150 - Kdr:SS-Ostubaf.Otto Skorzeny
Volks-Artillerie-Korps 388/402/405
Volks-Werfer-Brigade 4/9/17
2 Flak Division - Kdr:Oberst Fritz Laicher
246 Volks-Grenadier Division (reserve for Amree, 19.12.44) Kdr:Generalmajor Peter Korte
LXVII Armee Korps:
Kdr:General der Infanterie Otto Hitzfeld
272 Volks-Grenadier Division - Generalleutnant Eugen Konig
326 Volks-Grenadier Division - Kdr:Generalmajor Dr.Erwin Kaschner
2 Flak-sturm-Regiment
LXVI Armee Korps:
Kdr:General der Artillerie Walther Lucht
12 Volks-Grenadier Division - Kdr:Generalleutnant Gerhard Engel
62 Volks-Grenadier Division - Kdr:Generalmajor Fritz Warnecke
560 Volks-Grenadier Division - Kdr:Generalmajor Rudolf Bader
Korps Felber:
Kdr:General der Infanterie Hans Felber
18 Volks-Grenadier Division (1.1.45 attached) - Kdr:Generalmajor Gunther Hoffman-Schonborn
62 Volks-Grenadier Division (1.1.45 attached)- Kdr:Generalmajor Fritz Warnecke
Also included the I.SS Panzerkorps (SS-Gruf.Hermann Priess) and II.SS Panzerkorps (Kdr:SS-Ogruf.Wilhelm Bittrich)