100 Years Ago Today on 25 May 1917

One hundred years ago on 25 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:
25 May 1917 – Visibility fair. Factories again reported active in HENIN LIETARD and also COURRIERES. Enemy Artillery has been most active during the last twenty-four hours on roads and tracks N.W. of VIMY.  O.O.No. 79 was issued at 1 A.M. this morning and gives the following information:-
(1)          The 43rd Canadian Battalion will raid German Front Line Trench on May 27th.
(2)          (2) The 45th Battery and 36th How. Battery will support the raid.
(3)          Zero hour will be at 12.45 A.M. , May 27th.
 
5th Canadian Siege Battery, Canadian Artillery, Canadian Expeditionary Force war diary records:
Very little shooting was done today. Guns at left section were registered during the afternoon on trench junction at N33a 1.1.
 
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.