100 Years Ago Today on 17 May 1917

One hundred years ago on 17 May 1917
31st Battery, Canadian Field Artillery, Canadian Expeditionary Force had recently become a sub-unit of the 9th Canadian Field Artillery Brigade in the 3rd Canadian Division. The 9th Brigade war diary records:
Visibility very poor. Enemy Artillery very quiet. The enemy for the first time tried out today, a 77mm shell, which upon bursting, sends out a small white parachute-flare.
O.O. No. 74 issued today orders the 31st Battery to come under tactical control of this group, 8 P.M, 18th inst.
O.O. No. 75 was also issued today and gives further instructions for the taking over of ammunition, by this Group, from 93rd and 242nd A.F.A. Brigades. This ammunition is to be taken over this afternoon.
 
5th Canadian Siege Battery, Canadian Artillery, Canadian Expeditionary Force war diary records:
DIVION – Battery on rest in Billets at DIVION.
 
The 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.