1. In August, 1914, the 15th Reserve Division which was a part of the 8th Reserve Corps (with the 16th Reserve Division) and of the 4th Army, was concentrated on the Luxemburg frontier, which it crossed on the 19th. Entering Belgium on the 21st, it fought on the 22d at Maissin and Paliseul, and between the 25th and 27th it crossed the Meuse near Sedan, losing heavily. On August 28, the 2d Battalion of the 69th Reserve Infantry Regiment was reduced to 140 men (soldier’s notebook).
Champagne.
2. From this place, by way of le Chesne, Vouziers, Tahure, the division advanced as far as Marne Canal to the Rhine, at Vitry le Francois (Brusson Dompremy, Sept. 6), where it took part in the battle of the Marne.
3. The division retired between September 9 and September 16 by way of Suippes to Servon, Binarville, Massiges (Sept. 18 to 27), and established itself north of Massiges.
1915.
Champagne.
1. The 15th Reserve Division occupied the front north of Massiges and of Mesnil les Hurlus in the Souain area. In the course of various small actions, especially in May, it suffered heavily, so much so that by June 30, the losses suffered since the beginning of the campaign amounted to 2,316 men for the 2d Battalion of the 17th Reserve Infantry Regiment (official list of casualties).
2. In September, 1915, the elements of the 15th Reserve Division divided between the Liebert Division (17th and 69th Reserve Infantry Regiments) and the Ditfurth Division (25th and 30th Reserve Infantry Regiments) took part in the battle of Champagne near Tahure, east of Somme Py (from Sept. 25 to the beginning of October). They suffered considerable losses.
Aisne.
3. Toward the end of October the 15th Reserve Division was relieved from the Tahure sector and reorganized. At the beginning of November it went into line between Vailly and the Oise-Aisne Canal.