XX Corps (German Empire)

XX Army Corps XX. Armee-Korps
Flag of the Staff of a Generalkommando (1871–1918)
Active	1 October 1912 (1912-10-01)–1919 (1919)
Country	German Empire
Type	Corps
Size	Approximately 44,000 (on mobilisation in 1914)
Garrison/HQ	Allenstein
Engagements	World War I Battle of Gumbinnen Battle of Tannenberg (1914) First Battle of the Masurian Lakes Battle of the Vistula River

World War I

The XX Army Corps / XX AK (German: XX. Armee-Korps) was a corps level command of the German Army before and during World War I.

As the German Army expanded in the latter part of the 19th century and early part of the 20th century, the XX Army Corps was set up on 1 October 1912 in Allenstein as the Generalkommando (headquarters) for the southern part of East Prussia. It took over command of 37th Division from I Corps and the newly formed 41st Division. General der Artillerie Friedrich von Scholtz, former commander of 21st Division, took command. It was assigned to the I Army Inspectorate. which became the 8th Army at the start of the First World War.

XX Corps served on the Eastern Front from the start of the war. In September 1915, the corps was upgraded to form Armee-Gruppe Scholtz, later Armee-Abteilung Scholtz, as part of the Army of the Niemen. It was reformed from Armee-Abteilung D in September 1918. It was dissolved after the war.