It also allowed Himmler to promote SS officers to senior staff and field commands within the formation.
[2] After taking part in Operation Solstice east of the Oder River in February 1945, the army was assigned to OB West and reorganized in March 1945.
In early April, the 11th Army was assigned to strike west from Kassel to break the ring encircling the Ruhr pocket.
After launching a few small hopeless and unsuccessful attacks against the American 3rd Army, the 11th Army retreated to the Harz Mountains[3] After defending the Weser River and the Harz Mountains, the 11th surrendered to the Western Allies on 21 April.
[1] By 12 April the 11th SS Panzer Army was directly subordinated to OB West and had the following units assigned to it.