Born 23 June 1886 in Glatz (modern
Kłodzko, Poland, then in German
Silesia), in a family of long Silesian ancestry. His father was Major Paul Schubert, his mother Olga Thekla, née Freiin von Reißwitz und Kadersin. In 1904, he joined the
Prussian Army and initially served with the
Magdeburg-based Infantry Regiment "Prince Louis Ferdinand of Prussia" (2nd Magdeburg) No. 27. By the time of the outbreak of
World War I he rose to the rank of lieutenant. Promoted to the rank of captain in 1914, during the war he served with the Grenadier Regiment "King Frederick William II" (1st Silesian) No. 10, 21st Reserve Brigade, 4th Landwehr Division, 11th Infantry Division and as a staff officer in the 202nd Infantry Division. After the war, he served with the Freikorps "Grenzschutz Westpreußen" and then was accepted into the
Reichswehr. He served in Stettin in the 2nd Division, and then in the 8th 'Prussian' Infantry Regiment. Promoted to major in 1926, to lieutenant colonel in 1931 and to full colonel in 1933. Three years later he became the commanding officer of the
12th Infantry Regiment. Following
Adolf Hitler's rise to power, Schubert's career was fast-tracked. In April 1936 he was promoted to the rank of
major general and already in March 1938 he became a lieutenant general. The following month he became the commanding officer of the
44th Infantry Division, with which he took part in the initial stages of
World War II. During the joint Nazi and Soviet
invasion of Poland in 1939 his unit took part in the fights as part of the
14th Army. After the end of hostilities in October 1939 he was temporarily withdrawn to the personal reserve of the
OKH, but was soon reinstated to active service as a provisional commanding officer of the
XXIII Army Corps, with which he took part in the
battle of France of 1940. Shortly before the start of
Operation Barbarossa, Schubert was promoted to the rank of
General of the Infantry and his corps was relocated to
East Prussia. In September 1941 he was awarded the
Knight's Cross of the Iron Cross (Ritterkreuz). In May 1942 he temporarily commanded the entire
9th Army, but was again withdrawn from active service in the summer of that year. It was not until the following year that he was given the command over the
Hannover-based
XI Army Corps. Until the end of World War II he served on various staff positions in Vienna, away from the front. From 9 May to 1 June 1945, after the capitulation on
8 May 1945 in the Mauerkirchen discharge camp, he was given command of the 6th Army. On 30 May and 1 June 1945, Schubert awarded five Knight's Crosses based on earlier nominations and announced promotions to members of the
1st Mountain Division: Eisgruber, Göller, Groth, Starl, and Vögtle. On 10 May 1945, the commander of the troops in the American occupation zone, General
Harry John Collins, arrived in Mauerkirchen. In a speech broadcast over the camp's loudspeaker, he assured the camp inmates that they would be released as soon as enough paper could be found to print the release certificates. However, he had to admit that the administration was unable to provide food for the thousands of prisoners. The Germans were starving. ==Promotions==