August 12, 13, 14, 1918, were characterized chiefly by patrol encounters and local trench fighting. The Third Canadian Division cleared the network of trenches between Fouquescourt and Parvillers, and advanced the line as far as the northern and western edge of Parvillers and Damery. These two villages were captured in the evening of August 15, 1918, and were held in spite of heavy counterattacks. Bois de Damery was also taken, and this enabled the French to capture the important position known as Bois-en-Z.
On the nights of August 15, 16, and 17, 1918, the First Canadian Division relieved the Third Canadian Division, the latter being withdrawn to corps reserve.
Progress was made during August 16-17, 1918, the enemy being driven out of Fransart by the Fourth Canadian Infantry Brigade (Brigadier General R. Rennie) of the Second Canadian Division, and out of La Chavatte by the First Canadian Division, the Canadian line on the right being advanced in cooperation with the French.
The relief of the Second Canadian Division by the Fourth Canadian Division was carried out on the nights of August 15-16 and 16-17, 1918, the former being withdrawn to corps reserve on the 17th.
August 18, 1918, was quiet along the front, but on the 19th the Fourth Canadian Division carried out a minor operation near Chilly, which greatly improved the line in that neighborhood. Four hostile counterattacks to recover the newly won ground were beaten off during the night.
In the meantime it had been decided to transfer the Canadian Corps back to the First Army. On the 19th, the Second and Third Canadian Divisions started their move to the First Army, and on the night of the 19th-20th the relief of the First Canadian Division by the French commenced. This relief was completed on the 22d, and the First Canadian Division was placed in corps reserve.
On August 22, 1918, General Currie handed over command of the Canadian Corps front, and of the First and Fourth Canadian Divisions, Second Canadian Motor Machine-Gun Brigade, the Eighth Army Brigade, C. F. A., and the C. C. H. A., to the G. O. C. Australian Corps, and Canadian Headquarters moved north to Hautecloque (Arras-Lens sector).
Between August 8 and 22, 1918, the Canadian Corps fought against fifteen German divisions; of these, ten were directly engaged and thoroughly defeated, prisoners being captured from almost every one of their battalions; the five other divisions, fighting astride the Canadian flanks, were only partially engaged.
In the same period the Canadian Corps captured 9,131 prisoners, 190 guns of all calibers, and more than 1,000 machine guns and trench mortars.
The greatest depth penetrated approximated to fourteen miles, and an area of over sixty-seven square miles containing twenty-seven towns and villages had been liberated.