Following a four-day artillery bombardment starting on 21 September, infantry of the French Tenth Army attacked. By 26 September, the XXXIII and XXI corps had taken the village of Souchez but the III and XII corps had made little progress south-east of Neuville-St Vaast. The French failed to breach the German second line of defence and a breakthrough could not be achieved. Joffre sent the French IX Corps to assist the British attacks at Loos but this action also yielded little of strategic value. The German Official Historians of the Reichsarchiv recorded German casualties to the end of October as 51,100 men. Sheldon used figures taken from the French Official History to record 48,230 casualties, which was fewer than half of the casualties of the spring offensive from April to June. J. E. Edmonds, the British Official Historian recorded 61,713 British and c. 26,000 German casualties at the Battle of Loos.[a]
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Edmonds, J. E. (1928). Military Operations France and Belgium, 1915: Battles of Aubers Ridge, Festubert, and Loos. History of the Great War Based on Official Documents by Direction of the Historical Section of the Committee of Imperial Defence II. London: Macmillan. OCLC58962526.
Humphries, M. O.; Maker, J. (2010). Germany's Western Front, 1915: Translations from the German Official History of the Great War (1st ed.). Waterloo Ont.: Wilfrid Laurier University Press. ISBN978-1-55458-259-4.
Sheldon, J. (2008). The German Army on Vimy Ridge 1914–1917. Barnsley: Pen & Sword. ISBN1-84415-680-X.