4. In October the 18th Army Corps was reattached to the 2d Army which formed at this time the extreme right flank of the German Army (Péronne area) and the division went into line—the Lihons-Chaulnes road to the banks of the Avre.
1915.
Somme.
1. The 25th Division was retained in this sector north of the Avre until October 15, 1915. During this time it did not take part in any important action. In March it ceded the 118th Infantry Regiment to the 56th Division, a new formation.
2. After a long rest in the St. Quentin area (the staff of the 18th Army Corps was at Fresnoy le Grand in December, 1915, and that of the 25th Division at Busigny in January, 1916) the 25th Division was transferred to the sector north of Verdun at the beginning of February, 1916.
1916.
Verdun.
1. On February 21, 1916, it took part in the general attack north of Verdun. After advancing rapidly, the 18th Army Corps was stopped in the area west of Douaumont. On March 9 it failed in its attacks on the Haudremont Farm.
2. The Army Corps was then sent to rest in the rear area to be reorganized.
3. About April 10, the 18th Army Corps reappeared in line (Caillette wood). The 25th Division suffered very heavy losses in its attacks.