2. It was engaged in the battle of the Somme (north of Hem to the Monacu Farm) until August 12–14. The 100th Reserve Grenadier Regiment lost 1,700 men there (letter). The 7th Company of the 103d Infantry Regiment received at least 113 men as replacements between August 1 and 17.
Artois.
3. After a rest in the vicinity of Douai, the division was sent south of Lens (Angres-Souchez from the beginning of September to Oct. 20). Its composition was modified by the substitution of the 392d Infantry Regiment, formed by men taken from various Saxon regiments, for the 103d Reserve Infantry Regiment.
Somme.
4. About the middle of October it was again on the Somme (north of Gueudecourt). It remained there for five weeks and suffered very little.
Artois.
5. Relieved from the Somme on December 3 and 4 the 23d Reserve Division remained at rest for a few days near Cambrai, and then took over the sector east of Arras (between Roclincourt and Beaurains). The 101st Reserve Infantry Regiment was transferred to a new Saxon Division, the 119th, and the 23d Reserve Division was reduced to three regiments.
1917.
1. The division occupied the Artois front during the winter of 1916–17.
2. It was withdrawn at the end of March to go to Belgium.