The 105th Infantry Division initially served on the Eastern Front, seeing its first action in the Gorlice-Tarnów Offensive.
The division was sent back to Galicia in June in response to the Russian Brusilov Offensive.
At the end of October 1917, the division was sent to the Western Front, entering the line in the German "Siegfried" position.
The division moved to the St. Mihiel salient in September and then occupied the line in the Woëvre region.
Cavalry was reduced, artillery and signals commands were formed, and combat engineer support was expanded to a full pioneer battalion.