100 Years Ago Today on 29 July 1917

One hundred years ago on 29 July 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:
Visibility fair. Our heavy Artillery has been very active during the past twenty-four hours. Enemy Artillery normal.
Practice Barrage took place this afternoon as ordered, proving very satisfactory.
 
3rd Canadian Divisional Artillery war diary records:
CHATEAU DE LA HAIE – Weather bad. Heavy rains during day but clear visibility at times. In accordance with Addenda No. 2 to O.O.123 trial barrage shoots were carried out and was quite satisfactory.
Balloons were up but not when our batteries were firing. Enemy Artillery active. Wire on our front is not yet destroyed.
Ammunition Expended. A:73, AX.-, BX.34. Guns in Action: 32-18-pdrs. 12-4.5”Hows. 3-13 pdrs.
 
5th Canadian Siege Battery, Canadian Artillery, Canadian Expeditionary Force was a sub-unit of 1st Canadian Artillery Group. Their war diary records:
FIELD - Throughout the evening and night we carried out concentrated shoots and harassing fire on Trenches in N29a, N21a, N15d, N20a, and on Hostile Batteries NX78, NX10 and NX41. Expended 110 rounds on shoots.
 
1st Canadian Heavy Artillery Group war diary records:
Cabaret Rouge – Rainy for the most part. Concentrations and feint barrages carried out on 30th. And 31st. 6 other ranks left on 31st. instant to attend First Army Rest Camp, Boulogne.
 
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 -  Low clouds. Heavy thunderstorm in early morning. Considerable artillery activity throughout day.
Ammunition expended: -   60 pdr   8”How   6”How   9.2”How   4.5”How. 
                                                     549         566       686            170           271 
 
General Officer Commanding, Royal Artillery, Canadian Corps war diary records:
In the Field -      WEATHER:- Fair, bright intervals- some showers during day.
 
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.