During the night of December 17, 1916, German troops delivered a strong counterattack against the new French positions north of Douaumont. By hard fighting they succeeded in forcing the French out of the fortified position known as Chambrettes Farm, the farthest point which the French attained in their advance on December 15, 1916. The Germans were not allowed for long to enjoy their small success, for on December 18, 1916, the French returned in force and reoccupied the position which they now held intact.
In the afternoon of December 20, 1916, Canadian troops made an important raid on German trenches north of Arras on a front of 400 yards and succeeded in putting out of action, temporarily at least, an entire battalion of German infantry.
The Canadian troops, after the first preparatory fire of the British guns had ceased, advanced and occupied the German trenches in less than two minutes. The Germans, who had not expected that the raid would take place before Christmas Eve, were completely surprised. As they hurried for the saps and dugouts leading to the rear trenches, the Canadians showered hand grenades among them. Caught entirely unprepared, the Germans in the first line offered but a feeble resistance, the majority at once surrendering with cries of "Kamerad!" Many others were taken as they fled for the second and third lines while the Canadians pushed on to the second trenches. About twenty dugouts were destroyed, some of them with bombs captured from the Germans. In a few of these dugouts the occupants refused to surrender and consequently their lairs were blown to pieces. It was estimated that 150 Germans were killed during the raid. The Canadians took one commissioned officer prisoner and fifty-seven of other ranks.
A British officer engaged in the raid thus describes the struggle after the German line was penetrated:
"As we entered the trenches many Germans broke from the dugouts. All who did were subsequently well cared for. Each of our men was given definite instructions for his precise task and a map of the enemy's trenches, which proved absolutely correct.
"Each man knew every detail of the proposed operation. They were delighted at this and entered the fight with great cheers. When they came out two hours later they were singing and as happy as schoolboys on a holiday.