Very satisfactory damage to the enemy's barbed wire reported by the 4th Division patrols. A quiet day for the infantry, but our artillery silences several hostile batteries and causes many casualties in a body of infantry observed north of Irles. Regina, Coulée, and Courcelette Trenches bombarded and machine-gun emplacements successfully located and destroyed.
10th Brigade, 4th Division, takes over 2nd Brigade, 1st Division, lines. 4th Canadian Division comes under command of II. Corps and receives instructions for the preliminary operations. The 11th Brigade to capture and consolidate Regina Trench from Courcelette Trench to a point just before the junction with the Pys Road, then easterly to the sapheads built by the 10th Brigade. Strong blocks to be pushed out along the East Miraumont Road and the German trenches running parallel to it. The 10th Brigade to push forward its saps towards Regina and co-operate with the 11th Brigade with machine-gun fire. The artillery active on both sides, the enemy shelling the 10th Brigade front rather heavily.
The arrangements for the offensive on the 19th practically completed. The 11th Brigade moves up to its advanced headquarters in the North Practice Trenches, and has a great deal of trouble establishing satisfactory communications. Artillery not very busy, though our guns keep the enemy from repairing his damaged defences.
A steady rain, making movement almost impossible over the heavy ground. The 2nd Army decides to postpone the attack for twenty-four hours. The 10th and 11th Brigades working hard driving saps towards Regina Trench and establishing jumping-off positions. The 11th Brigade lines shelled heavily and continuously, despite the retaliation of the Canadian artillery.
Operations postponed for a further twenty-four hours, and the artillery takes advantage of the delay to complete the demolition of the enemy's wire. A quiet day for the infantry, but the trenches are full of water and in very bad condition, necessitating ceaseless work. The 3rd Canadian Division leaves the Somme area.
Attack made about noon by the 11th Brigade, excellent machine-gun work materially aiding a most successful offensive. The whole objective gained, and by 2 p.m. our men are busy consolidating the captured area. Enemy massing near the Coulée Trench dispersed by our artillery fire. Further information received that the Germans are concentrating near the Chalk pits east of the Quadrilateral, and artillery and machine-gun barrages redoubled and a counter-attack prevented.