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
Action of 25 September 1917 defeat German counter-attacks, by advancing no more than and then consolidating their positions, preferably on reverse-slopes. When the Germans counter-attacked, they would encounter a British defence-in-depth protected by artillery and suffer many casualties to little effect, rather than the small and disorganised groups of infantry that the Germans had driven back on 31 July, After the big defeat at the Battle of the Menin Road Ridge on 20 September, the 4th Army changed the organisation of regiments and battalions in their defensive positions. During August, each German front-line division had kept two regiments in the front position, with all six