Ypres east of the town. The first gas attack occurred against Canadian, British, and French soldiers, including both metropolitan French soldiers as well as Senegalese and Algerian tirailleurs (light infantry) from French Africa. The gas used was chlorine. Mustard gas, also called Yperite from the name of this town, was also used for the first time near Ypres, in the autumn of 1917. Of the battles, the largest, best-known, and most costly in human suffering was the Third Battle of Ypres (31 July to 6 November 1917, also known as the Battle of Passchendaele), in which the British, Canadian, ANZAC, and
14th Army (German Empire) front came under the command of 51st Corps until it was withdrawn in February 1918. Units are German unless designated as Austria-Hungary. The 14th Army was commanded throughout its existence by General der Infanterie Otto von Below, former commander of 6th Army. On dissolution of 14th Army, von Below was transferred to command of the newly raised 17th Army on the Western Front. 14th Army (German Empire) The 14th Army () was an army level command of the German Army in World War I formed in September 1917 in Krainburg for use against Italy. Its Headquarters was located at Vittorio