The battalion returned, after a period of rest near Loos, where they were designated as a Railway Pioneer unit, under the control of the director of railways, the battalion having left the 32nd Division. On 27 September, the battalion moved to the area around Acheux Wood. By November, the battalion had completed the Aveluy to Mouquet Farm line, a loop built on the Courcelles to Hebuterne line in addition to a siding at Maily-Maillet for a rail gun. Most of this work was completed alongside the 277th Railway Company of the Royal Engineers.
