6. From the beginning of August until September 26–27, the 12th Reserve Division occupied a sector north of the Lys, near Armentières (Warneton-Messines), where it once more suffered losses.
Somme.
7. At the end of September the division was once more on the Somme front (Barleux-Berny). It remained there until the beginning of November without suffering any great losses.
Artois.
8. Transferred to Artois, it went into line on Vimy Ridge (sector Vimy-Roclincourt) at the beginning of December. It suffered fairly heavy losses. At the present time, 17 per cent of the prisoners from the 51st Reserve Infantry Regiment belong to the 1917 class.
1917.
1. The 12th Reserve Division remained on the Vimy front until February 27, 1917.
2. It was resting in the Avesnes region during the month of March.
3. From April 9–12 to May 24 it held the lines between Itancourt and the Oise.