2. Engaged in the battle of the Marne, on the extreme right of the 3d Army, the 23d Reserve Division suffered heavy losses (Sept. 8–9).
Champagne.
3. It retired, by way of Mourmelon, to the region of Moronvilliers Auberive and took up its position there (end of September).
1915.
Champagne.
1. The 23d Reserve Division occupied the Champagne front (Auberive sector) until the month of July, 1916.
2. On September 25 it received the French offensive, which caused it very heavy losses. At this time the 103d Reserve Infantry Regiment was detached from the 23d Reserve Division and assigned to the Liebert Division. In October it rejoined the 23d Reserve Division after being reorganized. Its losses in the Champagne battle had been 140 killed, 751 wounded, and 1,369 missing. On October 2 at least 115 men had been sent to the 8th Company of the 103d Infantry Regiment as replacements.
1916.
1. The 23d Reserve Division was relieved from the sector of Auberive-St. Souplet sector between July 15 and 20, 1916, and transferred to the north of Peronne.