Career
In 1914, von Strantz was commanding V Corps with headquarters in Posen. In peacetime the Corps was assigned to the VIII Army Inspectorate but on mobilisation V Corps was assigned to the 5th Army forming part of centre of the forces for the Schlieffen Plan offensive in August 1914 on the Western Front. Armee-Abteilung Strantz (named for von Strantz while he was in command, but later renamed to Armee-Abteilung C) was formed on 18 September 1914 from the left (southern) wing of the 5th Army.
lieutenant initially commanded V Corps and III Bavarian Corps, controlling half a dozen divisions.
Strantz remained as commander of V Corps concurrently but was deputised in this post by a Divisional Commander. Strantz remained as commander of the Armee-Abteilung until 2 February 1917 when he retired from active service (German: zur Disposition gestellt).