German attack on Vimy Ridge, 21 May 1916
In 1932, Edmonds recorded 1,344 German casualties; 615 men in the attack and 729 during British counter-attacks. British casualties in the 47th Division from 22 to 24 May were 1,571, 2nd Division casualties were 267 and the 7th Brigade (25th Division) had 637 casualties, a total of 2,475. In 1936, the official historians of "Der Weltkrieg", the German official history, recorded that 300 British prisoners had been taken.
Battle of Arras (1917)
At roughly the same time, in perhaps the most carefully crafted portion of the entire offensive, the Canadian Corps launched an assault on Vimy Ridge. Advancing behind a creeping barrage and making heavy use of machine guns – eighty to each brigade, including one Lewis gun in each platoon – the corps was able to advance through about of German defences and captured the crest of the ridge at about 13:00. Military historians have attributed the success of this attack to careful planning by Canadian Corps commander Julian Byng and his subordinate General Arthur Currie, constant training and the assignment of specific objectives to each platoon. By giving units specific goals, troops could continue the attack even if their officers were killed or communication broke down, thus bypassing two major problems of combat on the Western Front. The Canadian troops could see the Germans in retreat across the Douai Plain away from the ridge.There was nevertheless an inflexibility to the plan which prevented the leading troops from continuing the advance and on 10 April the Germans began to stop the gaps with reserves.