No record in the 1/6th Battalion War Diary [WO/95/2694]
10/IX/17: Hostile TMs fairly active on our own sector. 1 Company of 1st Monmouths began work of preparing front line for gas cylinders. Our posts in G4b were heavily bombarded by gas TM bombs at 11 pm.
139 Infantry Brigade: Headquarters War Diary [WO95/2692]