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.
Second Battle of Ypres
After the war, German casualties from 21 April to 30 May were recorded as 34,933 by the official historians of the . In the British Official History, J. E. Edmonds and G. C. Wynne recorded British losses of 59,275 casualties, the French about 18,000 casualties on 22 April and another 3,973 from Canadian casualties from 22 April to 3 May were 5,975, of whom about 1,000 men were killed. The worst day was 24 April, when were suffered during infantry attacks, artillery bombardments and gas discharges. In 2002, Clayton wrote that thousands of men of the 45th and 87th divisions ran from the gas but that the number of casualties was low. The Germans overran both divisions' artillery but the survivors rallied and held a new line further back. In 2010, Humphries and Maker, in their translated edition of "Der Weltkrieg" recorded that by 9 May, there had been more than 35,000 German casualties, 59,275 British between 22 April and 31 May and very many French casualties, 18,000 on 22 April alone. In 2012, Sheldon gave similar figures and in 2014, Greenhalgh wrote that French casualties had been exaggerated by propaganda against German "frightfulness" and that in 1998, Olivier Lepick had estimated that were killed by gas in April out of casualties.