81st Reserve Division (German Empire)
The 81st Reserve Division (81. Reserve-Division) was a unit of the Imperial German Army in World War I. The division was formed at the end of December 1914 and organized over the next month, arriving in the line in early February 1915. It was part of the second large wave of new divisions formed at the outset of World War I, which were numbered the 75th through 82nd Reserve Divisions. The division was initially part of XXXXI Reserve Corps. The division was disbanded in 1919 during the demobilization of the German Army after World War I. The division was recruited in various Prussian provinces: Brandenburg, Pomerania, and West Prussia. Combat chronicle

The 81st Reserve Division initially fought on the Western Front, seeing its first action in the trenches west of the Somme. It was transferred to the Eastern Front in April 1915, and fought in the Gorlice-Tarnów Offensive, crossing the San River and fighting around Przemyśl, and then fighting in the 1915 Battle of Lemberg. It continued fighting across the border between Austro-Hungarian Galicia and Russian Poland, fighting in a series of battles leading to the taking of Brest-Litovsk in August and Pinsk in September, and then settled into positional warfare in the Pripyat Marshes. It remained there until December 1917, when, after the armistice on the Eastern Front, it was sent back to the Western Front. It fought in the trenches and saw action in the Battle of Armentières in April 1918, part of the Battle of the Lys, also known as the Lys Offensive or the Fourth Battle of Ypres. The division continued fighting on various parts of the Western Front until the end of the war. Allied intelligence rated the division as third class. Order of battle on formation

The 81st Reserve Division, like the other divisions of its wave and unlike earlier German divisions, was organized from the outset as a triangular division. The order of battle of the division on December 29, 1914, was as follows:

81.Reserve-Infanterie-Brigade
Reserve-Infanterie-Regiment Nr. 267
Reserve-Infanterie-Regiment Nr. 268
Reserve-Infanterie-Regiment Nr. 269
Reserve-Radfahrer-Kompanie Nr. 81
Reserve-Kavallerie-Abteilung Nr. 81
81.Reserve-Feldartillerie-Brigade
Reserve-Feldartillerie-Regiment Nr. 67
Reserve-Feldartillerie-Regiment Nr. 68
Reserve-Pionier-Kompanie Nr. 84
Reserve-Pionier-Kompanie Nr. 85

Order of battle on January 1, 1918

The most significant wartime structural change in the divisions of this wave was the reduction from two field artillery regiments to one. Over the course of the war, other changes took place, including the formation of artillery and signals commands and the enlargement of combat engineer support to a full pioneer battalion. The order of battle on January 1, 1918, was as follows:

81.Reserve-Infanterie-Brigade
Reserve-Infanterie-Regiment Nr. 267
Reserve-Infanterie-Regiment Nr. 268
Reserve-Infanterie-Regiment Nr. 269
2.Eskadron/Garde-Dragoner-Regiment Königin Viktoria von Groß Britannien u. Irland Nr. 1
Artillerie-Kommandeur 81
Reserve-Feldartillerie-Regiment Nr. 68
II.Bataillon/Fußartillerie-Regiment Nr. 26 (from March 28, 1918)
Pionier-Bataillon Nr. 41
Reserve-Pionier-Kompanie Nr. 84
Reserve-Pionier-Kompanie Nr. 85
Minenwerfer-Kompanie Nr. 281
Divisions-Nachrichten-Kommandeur 481

References
 81. Reserve-Division (Chronik 1914/1918) - Der erste Weltkrieg
 Hermann Cron et al., Ruhmeshalle unserer alten Armee (Berlin, 1935)
 Hermann Cron, Geschichte des deutschen Heeres im Weltkriege 1914-1918 (Berlin, 1937)
 Günter Wegner, Stellenbesetzung der deutschen Heere 1815-1939. (Biblio Verlag, Osnabrück, 1993), Bd. 1
 Histories of Two Hundred and Fifty-One Divisions of the German Army which Participated in the War (1914-1918), compiled from records of Intelligence section of the General Staff, American Expeditionary Forces, at General Headquarters, Chaumont, France 1919 (1920)

Notes

Infantry divisions of Germany in World War I
Military units and formations established in 1914
Military units and formations disestablished in 1919
1914 establishments in Germany