Aisne-Chemin des Dames.
3. On April 10, in anticipation of the French attack, the elements of the division were concentrated near Filain. On the 7th the 210th Reserve Infantry Regiment was in action south of the Ailette Canal (east of Vauxaillon). The other regiments were sent west of the Oise-Aisne Canal toward Braye en Laonnois. All the units underwent the attack of April 16, and were relieved between April 20 and 22, having suffered very heavy losses.
4. Concentrated and reorganized north of Laon (Crecy sur Serre), the division again went into action near the Oise-Aisne Canal (Froidmont Farm-Malval Farm, on May 3). Its losses were again very severe during the new French attack of May 5. It was withdrawn from the front on the 6th.
Verdun.
5. Transferred to the vicinity of Conflans and reorganized, the division went into line on the Côtes de Meuse (Calonne les Éparges) on May 27.
6. After three months in the sector on the Côtes, the 45th Reserve Division entrained at Conflans (Sept. 26) for Flanders.
Flanders.
7. On September 22 it went into position in the Zonnebeke sector as a counterattacking division. Elements of the division were engaged on October 1 (Polygon wood), on the 4th (Zonnebeke), and from the 9th to the 12th as reinforcements on the Passchendaele front. After the British attack of October 12 the division, very much exhausted by these battles, was relieved.
Verdun.
Transferred to the rear of the Côtes de Meuse, sent into line on the heights northeast of St. Mihiel in November; it was sent to the vicinity of Bohain in December.