Somme.
1. It was retained with its army corps for a year in the vicinity of Roye (until Oct. 15, 1915). In March, the 25th Division transferred the 88th Infantry Regiment for the formation of the 56th Division.
2. On October 15, 1915, it was withdrawn from the front and sent for a long rest near St. Quentin.
1916.
The 80th Fusiliers took part in the attack at Frise on January 29, 1916. A few days afterwards the 21st Division was transferred north of Verdun.
Verdun.
1. From February 27 to March 16 it was engaged at Verdun (Caures wood, Louvemont, Douaumont).
2. From March 17 to April 9 it was reorganized (imperial review on Apr. 1, at Marville).
3. From April 10 to 25 it again attacked at Verdun. One may judge of the losses by the replacements destined to make them good: From February 27 to May 10 the 1st Company of the 80th Fusiliers received at least 205 men; the 5th Company of the 81st Infantry Regiment at least 306 (Soldbuecher). The total losses of the 21st Division from March 15 to May 19, 1916, amounted to 8,549 officers and privates for the infantry alone. (Official List of Casualties.)
4. About May 15 the 21st Division occupied the sector west of Craonne, where it was relieved in September. Two battalions of the 87th Infantry Regiment were sent in haste to Fricourt at the time of the Somme offensive (July 2).