3. From June, 1915, until June, 1916, the 15th Division occupied various sectors of the Aisne: Vailly-Pommiers (end of July), Nouvron (September), Ste. Marguerite-Bucy le Long (October). 1916. SOMME. 1. July, 1916, the 15th Division was transferred to the Somme. It took part in the battle and participated in the attack at Biaches, where it suffered heavy losses. 2. At the end of August it again took over its sector, St. Marguerite- Bucy le Long. Its composition was modified by the temporary loss of the 160th Infantry Regiment, sent to the combined division of Dumrath (August), by the definite transfer of the 65th Infantry Regiment and the 161st Infantry Regiment to the 185th Division, and of the 25th Infantry Regiment to the 208th Division. 3. At the beginning of October it had received in exchange for the regiments transferred the 186th Infantry Regiment (temporarily) and the 389th Infantry Regiment, a new formation (men taken from various Rhine regiments), and received the 160th Infantry Regiment again (the Dumrath Division having been dissolved). It reappeared on the Somme front (Sailly-Saillisel), where it again suffered heavy losses. AISNE. 4. At the end of October it returned to the Aisne and occupied the sectors of Nuvron-Moulin sous Touvent. It was reorganized finally in November and received its definitive composition. RUSSIA. 5. About the middle of November the 15th Division was withdrawn from the front, entrained after a few days’ rest, and transferred to the Eastern Front. It went into line north of Kisselin. 1917. 1. In February, 1917, the division was in Transylvania (upper valley of the Olta). 2. In April it was in reserve at Vladimir-Volynski. FRANCE. 3. Transferred to the French front (entrained at Kovel, detrained at Vigneulles, at the end of April), the division occupied the sector of Vaux les Palameix (Meuse). CALIFORNIE PLATEAU. 4. At the end of May it was relieved and sent (night of May 29–30) to the Vauclerc Plateau and the Californie Plateau. On June 2 and 3 it took part in the violent attack upon these plateaus. It renewed these attacks upon July 3 and again suffered heavy losses. LORRAINE. 5. The division was relieved on the night of July 8–9 and then sent to the Lys area, from which it was transferred into the zone Richecourt- Avricourt. It was put in line (July 15) near Blamont. FLANDERS. 6. It was relieved about September 4, sent to rest in the Verdun area, and transferred to Belgium on October 7, where it was in action and suffered heavily on the Ypres front (north of the Ypres-Menin road) until November 13. 7. The division was then sent to the rear (area of Bruges-Knocke). 8. It again went into line east of Ypres about December 18 (east of Passchendaele). In the middle of January, 1918, it was withdrawn from this sector and sent to the Bruges area. RECRUITING.