One hundred years ago on 23 September 1917
31st Battery, Canadian Field Artillery, Canadian Expeditionary Force was a sub-unit of the 9th Canadian Field Artillery Brigade in the 3rd Canadian Division. The 9th Brigade war diary records:
The brigade remained at rest at this point until the end of the month, most of the time being devoted to cleaning equipment and grooming horses.
31st Battery, Canadian Field Artillery was attached to 10th Canadian Field Artillery Brigade during this period. The 10th Brigade war diary records that:
Fine and warm. Quiet on the front. Lt.-Col. Ralston, D.S.O., returned from Dieppe.
3rd Canadian Divisional Artillery war diary records:
FORT GEORGE - Considerable enemy movement was reported. Enemy trench mortars were becoming more active as our trenches are being pushed forward. Ammunition expended: BX.35. Guns in action: 20 - 18pdrs., 6 - 4.5"hows.
5th Canadian Siege Battery, Canadian Artillery, Canadian Expeditionary Force was a sub-unit of 1st Canadian Heavy Artillery Group. Their war diary records:
ANGRES - During the month we were bombarded with Gas shells on several occasions also shelled 8” and 5.9” losing a quantity of ammunition.
1st Canadian Heavy Artillery Group war diary records:
Cabaret Rouge – Day comparatively quiet, little firing done by either side. In the evening batteries of this group fired on S.O.S. lines in AVION and LENS sectors.
General Officer Commanding, Royal Artillery, Canadian Corps war diary records:
In the Field - At 5.45 pm, SOS on 1st Canadian Division front. Enemy placed heavy barrage on CITE. Ste. ELIZABETH and CITE Ste. THEODORE, but no attack followed. All was reported quiet by 6.28 pm.
15th Field Artillery Regiment RCA perpetuates the following sub units:
31st Battery, Canadian Field Artillery, Canadian Expeditionary Force,
5th Canadian Siege Battery, Canadian Artillery, Canadian Expeditionary Force,
68th Battery, Canadian Field Artillery, North Russia Expeditionary Force, was not authorized to be formed until 3 August 1918, and
85th Battery, Canadian Siberian Expeditionary Force was not authorized to be formed until 12 July 1918.