Wilder-Neligan was on leave from 25 September to 8 October. The day after he returned, the battalion conducted a raid in force of German positions in Celtic Wood near Passchendaele, part of the Battle of Poelcappelle. The operation was a disaster, largely due to the poor artillery support provided. Of the 85 troops involved, most were killed or wounded. Wilder-Neligan was mentioned in despatches for the third time in November. The recommendation cited his "clever organisation, untiring energy, zeal and exemplary bravery" between February and September 1917, and highlighted his leadership at Bullecourt. The 10th Battalion rotated through front line, reserve and rest areas throughout the winter of 1917/1918.