XI SS Panzer Corps

The XI SS Corps (German: XI. SS-Armeekorps later XI. SS-Panzerkorps) was a SS Corps created on July 24, 1944 in southern Poland on the basis of the remains of the headquarters of the in Crimea defeated V Army Corps and employed on the Eastern Front in 1944-1945 during World War II. There were no SS units in the Corps, the SS prefix in the name is explained only by the fact that the commander Matthias Kleinheisterkamp, was not a general of the Wehrmacht, but a SS obergroupenfuhrer. On February 1, 1945 the Corps was transformed to the XI SS Panzer Corps.

History
The Corps became in August 1944 in Western Galicia a part of the 17th Army, which was included in Army Group North Ukraine (in October renamed Army Group A). It defended the front between Tarnów and Pilzno until it had to withdraw to the Western Carpathians during the Vistula–Oder Offensive (January 1945).

It became part of the 9th Army which had to build e defensive line on the Oder River. On February 1, 1945 the Corps was upgraded to the XI SS Panzer Corps, and was ordered to destroy the Soviet bridgehead near Küstrin and relieve the Fortress, but failed. The Corps then fought in the Battle of the Seelow Heights and Battle of Halbe in late April 1945 and was defeated by Soviet troops. Kleinheisterkamp committed suicide.

The composition of the Corps
In September 1944:
 * 78th People's Grenadier Division
 * 544th Grenadier Division
 * 545th Grenadier Division

In March 1945:
 * 25th Panzergrenadier Division
 * 712th Infantry Division
 * Panzergrenadier Division Kurmark
 * Küstrin Fortress