In October 1915 Weber returned to Germany. Formally reinstated in the German Imperial Army, from 22 October to 16 November 1915 he served on the Western Front as commanding officer of 100th Infantry Brigade.G. Wegner, Stellenbesetzung der Deutschen Heere 1815-1939, vol. 1: Die Höheren Kommandostellen 1815-1939 (Biblio Verlag: Osnabrück 1990: ), p. 315. On 21 December 1916 he assumed command of 9th Division on the Western Front and remained in this post until the Armistice in 1918.
