100 Years Ago Today on 1 August 1917

One hundred years ago on 1 August 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:
11 pm - Enemy planes not active today. Enemy artillery very active in the morning on counter-battery work and harassing fire.
 
3rd Canadian Divisional Artillery war diary records:
BRAQUEMONT - Weather bad; rain all day and aerial activity was practically nil.  Enemy Trench Mortars, both heavy and medium were very active at times and the enemy artillery practiced some defensive barrages.  Our Artillery - the heavies were very active all day, the 3rd. C.D.A. guns were quiet according to orders, except for night firing carried out by the Howitzers. 
Ammunition expended A.48, HX. 200. N.22.  NX.2.  Guns in action 32 18-pdrs., 4 13-pdrs., 12 4.5" hows.
 
5th Canadian Siege Battery, Canadian Artillery, Canadian Expeditionary Force was a sub-unit of 1st Canadian Heavy Artillery Group for Administration and under the 2nd Canadian Heavy Artillery group for Counter Battery work. Their war diary records:
ANGRES- During the month of August the Battery took part in the capture of Hill 70, also the taking of the Green Crasier and all the fighting on the Lens front. During this time the Battery was twice heavily shelled by 8” and on several occasions we were bombarded with Gas Shells.
 
1st Canadian Heavy Artillery Group war diary records:
Cabaret Rouge – The batteries of the 1st. Canadian H.A. Group carried out several concentrations on important points,  Cite St. Auguste, Cite Du Nord, and houses suspected to contain machine gun emplacements.  A feint barrage was carried out by all batteries on enemy's communication trenches, bridges, trench junctions etc. at 7.30 p.m.  Considerable night firing on enemy back areas, roads and approaches to LENS. 
 
2nd Canadian Heavy Artillery Group was placed in tactical control of 5th Canadian Siege Battery for counter battery work. The 2nd CHAG war diary records:
X.23.b.1.5 -  Wet and Rainy. Visibility fair at times. Enemy at 4 a.m. put over heavy barrage on Corps front; Apparently anticipating an attack. Two concentrated shoots during day. Much harassing and neutralization fire.
Ammunition expended:-    60-pr.    8”How     6”How     9.2”How     4.5”How
                                                   568         151             568           208               739
 
General Officer Commanding, Royal Artillery, Canadian Corps war diary records:
In the Field -      WEATHER:  Frequent showers, cloudy and cool. 
 
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.