Hugo Stoltzenberg for the first time on the Western Front. The first gas attack occurred against Canadian soldiers and also against a force of mostly colonial soldiers from French Africa known as French colonial troops. The gas used was Chlorine gas. Mustard gas, also called Yperite from the name of this city, was also used for the first time near Ypres in the autumn of 1917. Prior to that, Stoltzenberg had injured his eye in an incident involving a chlorine gas cylinder which exploded and blinded him in the left eye. After the end of World War I, Stoltzenberg participated in clearing
3rd Army (German Empire) May 1917. Einem's right wing units would also participate in Erich Ludendorff's Champagne-Marne offensive on 15–17 July 1918 supporting the east flank of the German 1st Army. After suffering severe casualties in battle with John J. Pershing's Allied Expeditionary Force from 26 September – 11 November in the Meuse-Argonne offensive, the army was forced to retreat northward shortly before the war's end. At the end of the war it was serving as part of "Heeresgruppe Deutscher Kronprinz". By the end of the war, the 3rd Army was organised as: The 3rd Army had the following commanders during its existence: 3rd