1917.
Somme.
1. About February 18, 1917, the 18th Division was withdrawn from the front, then sent back into line at the beginning of March, at Puisieux-Gommecourt (Somme).
Artois.
2. At the end of March it was transferred to Artois, north of the Scarpe, and went into action at Roeux and Fampoux, from April 10 to April 23.
3. Relieved at the end of April, it went back into line about May 8, in the area south of Arras, and from that date until the end of August occupied sectors in the vicinity of Cambrai (Villers-Plouich, Havrincourt, Marcoing).
Flanders.
4. On August 27 the 18th Division was relieved from the Cambrai front (Ribecourt-Marcoing sector) and entrained for Flanders, where it was made an army reserve in the Ruddervoorde (northeast of Thourout). It was there reorganized with replacements coming from troops of the 9th Corps District stationed in Russia (taken from the 426th Infantry Regiment, the 31st Landwehr Regiment, and the 3d Ersatz Reserve Regiment).
5. It went into the sector Mangelaere about September 16 and underwent the Franco-British attack of October 9, which caused it rather serious losses.