1915.
Aisne.
1. The division held the front Craonne-Berry au Bac until July, 1916. In this sector the losses were very slight.
2. In March, 1915, some of its elements were in Champagne for a short time. In April, the 182d Infantry Regiment was taken for the 123d Division (a new formation).
1916.
Somme.
1. On July 3, 1916, at the beginning of the Franco-English offensive, the 23d Division detached some elements of the 101st and 108th Regiments to reinforce the divisions engaged in the attack (region of Sovecourt-Vermandovillers).
2. From the end of July and until the 1st of September the 100th Grenadier Regiment was incorporated in a new division (Franke Division), which held the front from Deniecourt to Vermandovillers.
3. The other regiments of the 23d Division continued to occupy the sector of Craonne-Berry au Bac until the end of August.
4. On September 4 the 101st and 108th Regiments, coming from Berry au Bac, were sent to the Somme. They suffered considerable losses.