 "Panzerkorps", the FBB saw action against the US Army 101st Airborne Division at Bastogne.On 26 January 1945 the FBB was ordered to expand and form the "Führerbegleitdivision".When the "Großdeutschland" Division was expanded to "Panzer" Corps "Großdeutschland", its subordinate units were expanded to bring GD to corps status.