German divisions underwent various organizational changes after the Franco-Prussian War. The organization of the 10th Division in 1914, shortly before the outbreak of World War I, was as follows:
19. Infanterie Brigade
* Grenadier-Regiment Graf Kleist von Nollendorf Nr. 6
* Infanterie-Regiment Graf Kirchbach Nr. 46
20. Infanterie Brigade
* Infanterie-Regiment König Ludwig III. von Bayern Nr. 47
* 3. Niederschlesisches Infanterie-Regiment Nr. 50
77. Infanterie-Brigade
*Füsilier-Regiment von Steinmetz Nr. 37
*7. Westpreußisches Infanterie-Regiment Nr. 155
10. Kavallerie-Brigade
*Ulanen-Regiment Kaiser Alexander III. von Rußland Nr. 1
*Regiment Königs-Jäger zu Pferde Nr. 1
10. Feldartillerie-Brigade
* 1. Posensches Feldartillerie-Regiment Nr. 20
* 2. Posensches Feldartillerie-Regiment Nr. 56
Landwehr-Inspektion Posen
Order of battle on mobilization
On mobilization in August 1914 at the beginning of World War I, most divisional cavalry, including brigade headquarters, was withdrawn to form cavalry divisions or split up among divisions as reconnaissance units. Divisions received engineer companies and other support units from their higher headquarters. The 10th Division was again renamed the 10th Infantry Division and lost the 77th Infantry Brigade to the 10th Reserve Division. Its initial wartime organization was as follows:
19. Infanterie-Brigade
*Grenadier-Regiment Graf Kleist von Nollendorf Nr. 6
*Infanterie-Regiment Graf Kirchbach Nr. 46
20.Infanterie-Brigade
*Infanterie-Regiment König Ludwig III von Bayern Nr. 47
*3. Niederschlesisches Infanterie-Regiment Nr. 50
Regiment Königs-Jäger zu Pferde Nr. 1
10. Feldartillerie-Brigade
*1. Posensches Feldartillerie-Regiment Nr. 20
*2. Posensches Feldartillerie-Regiment Nr. 56
2.Kompanie/Niederschlesisches Pionier-Bataillon Nr. 5
3.Kompanie/Niederschlesisches Pionier-Bataillon Nr. 5
Late World War I organization
Divisions underwent many changes during the war, with regiments moving from division to division, and some being destroyed and rebuilt. During the war, most divisions became triangular - one infantry brigade with three infantry regiments rather than two infantry brigades of two regiments. An artillery commander replaced the artillery brigade headquarters, the cavalry was further reduced, the engineer contingent was increased, and a divisional signals command was created. The 10th Infantry Division's order of battle on May 3, 1918, was as follows:
20. Infanterie-Brigade:
*Grenadier-Regiment Graf Kleist von Nollendorf Nr. 6
*Infanterie-Regiment König Ludwig III von Bayern Nr. 47
*Infanterie-Regiment Nr. 398
*Maschinengewehr-Scharfschützen-Abteilung Nr. 17
3.Eskadron/Regiment Königs-Jäger zu Pferde Nr. 1
Artillerie-Kommandeur 10
*2. Posensches Feldartillerie-Regiment Nr. 56
*II.Bataillon/1. Westpreußisches Fußartillerie-Regiment Nr. 11