100 Years Ago Today on 5 October 1917

​One hundred years ago on 5 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:
Operation Order #108 was issued postponing all preparation for the coming operation with reference to the taking of MERICOURT.  Our two batteries in the line are to be relieved tonight.
 
31st Battery, Canadian Field Artillery was attached to 10th Canadian Field Artillery Brigade during this period. The 10th Brigade war diary records that:   
Operation Order #108 was issued postponing all preparation for the coming operation with reference to the taking of MERICOURT.  Our two batteries in the line are to be relieved tonight.
 
3rd Canadian Divisional Artillery war diary records:
In accordance with O.O. 135 the C.R.A. and C.D.A. assumed command at 10 A.M., the Headquarters 3rd C.D.A. opening at VILLERS BRULIN at 3 P.M. October 5th. Operations now in course of preparation have been postponed.
No. of guns in action – 19-18 pdrs. 6-4.5” Hows.
Ammunition expended – A.41, AX.174, AT.32, BX.126
 
5th Canadian Siege Battery, Canadian Artillery, Canadian Expeditionary Force was a sub-unit of 1st Canadian Heavy Artillery Group. Their war diary records:
ANGRES -  Fired 28 Rounds Registration shoot on Bridge at N 20 a 40.30.
 
1st Canadian Heavy Artillery Group war diary records:
Cabaret Rouge – ? went out of the group as being ordered to proceed to another area.  1st and 2nd Divisions took over the line from 3rd and 4th Divisions. 
 
General Officer Commanding, Royal Artillery, Canadian Corps war diary records:
In the Field - H.Q. 2nd C.D.A. took over from H.Q. 3rd C.D.A.
 
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.