One hundred years ago on 18 October 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, the batteries getting further equipment such as ration packs and pack-saddles, water carriers, etc. and some of the officers going forward to look over the new gun positions. On October 20th Operation Order #111 was issued referring to the relief by the 9th Brigade of the 108th A.F.A. Brigade R.F.A. which is to be complete by 8.00 am October 21st, 1917.
3rd Canadian Divisional Artillery war diary records:
Ammunition, tents, shelters, etc., were handed over. O.O.137-10
5th Canadian Siege Battery, Canadian Artillery, Canadian Expeditionary Force was a sub-unit of 1st Canadian Heavy Artillery Group. Their war diary records:
We received orders to move and the battery took the road in Motor Lorries leaving one Officer Lieut. Beecroft and 10 men as rear guard to hand over to relieving Battery. The remainder of the Battery proceeded to Bethune where we billeted for the night.
1st Canadian Heavy Artillery Group war diary records:
Special Battalion arrived from BREST at 20:00 this evening.
General Officer Commanding, Royal Artillery, Canadian Corps war diary records:
Bdes. of 4th C.D.A. went into action. Hostile art'y active on bty. positions and movement on roads. Short and not heavy barrages were placed on our front line. Our heavy art'y bombarded strong points, concrete emplacements and dug-outs. Counter-battery work: three successful aeroplane shoots, neutralizing fire on 34 hostile btys. 28 N.F. calls.
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.