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
Actions of 30 September – 4 October 1917 the counter-attack. After the attack of 26 September, the British had used information from prisoners, gleanings from the battlefield and ground observation to judge the state of the 4th Army. The concentration of the German heavy artillery into the Tenbrielen, Kruiseecke, Becelaere and Keiberg groups directed towards Menin Road Ridge, Tower Hamlets Ridge, Polygon Wood and Broodseinde Ridge was reported on 29 September by I Anzac Corps flash spotters; RFC reconnaissance flights confirmed the changes but this took from 1 to 2 October, because Germans hid the redeployment with smoke screens. By 29 September, the 4th Army had recovered from