One hundred years ago on 22 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 poor. Activity on both sides below normal. Our F.O.O.s have been most active in locating and reporting hostile gun-flashes and some excellent Counter-battery work has been made possible by this.
O.O. No. 77 issued today contains the following information:-
(1) The 58th Battalion has instructions to consolidate German Post at T.8.a.75.95.
(2) Our support will be as follows:
(a) For one half hour before Zero we will keep up a light disturbing fire on German Front on T.2.c.
(b) Slow covering fire from 9.30 P.M (Zero hour) till 10.15 P.M.
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.