1. In 1915, and until October, 1916, it guarded the same front in Lorraine (from the canal of the Marne to the Rhine as far as the Cirey area).
2. About the month of April the 100th Landwehr was reattached to the division, the battalions of which were grouped in July into 4 Ersatz Regiments (Nos. 23, 32, 24, 40).
1916.
Lorraine.
1. During its stay in Lorraine the 19th Ersatz Division was not engaged in any serious fighting. The 23d Ersatz alone took part in the affair of Thiaville, February 28, 1916.
Cotes de Meuse.
2. Relieved in the area of Badonviller-Leintrey, at the beginning of October, 1916, the 19th Ersatz Division was reduced to three regiments (23d, 32d, 24th Ersatz) and sent to the Briey area (Oct. 8) and from there to Verdun (sector of Watronville-Damloup).
1917.
Cotes de Meuse.
1. The 19th Ersatz Division remained in the same sector of the Cotes de Meuse for almost all of the year 1917. It lost very slightly.