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. "The neatness and dispatch with which the raid was carried out were unique. The artillery cooperation of the British guns was perfection. Beautifully placed curtains of fire prepared our advance, and creeping forward protected us as they proceeded to demolish absolutely the enemy trenches and dugouts. The program had given the men an hour and a half for their work, but the clean-up was accomplished in an hour and ten minutes, when the raiders signaled that they were ready to return to their own trenches." The Germans did not attempt a counterattack until the following night, when they mistakenly bombarded and raided their own first lines, believing that the Canadians were still there. As it happened, the Canadian troops who had carried out the successful raid were some miles away. They were not a part of the fighting line, but on rest, and had gone forward for this particular military operation planned some weeks before. During the night of December 19, 1916, British troops made a successful raid on German lines in the neighborhood of Gommecourt, where after doing considerable damage to the defensive works they retired without any casualties. Early in the morning of the following day the British made another successful raid on German trenches north of Arras, where they captured a number of prisoners.