Sulfur mustard later also against the French Second Army. The name Yperite comes from its usage by the German army near the town of Ypres. The Allies did not use mustard agent until November 1917 at Cambrai, France, after the armies had captured a stockpile of German mustard shells. It took the British more than a year to develop their own mustard agent weapon, with production of the chemicals centred on Avonmouth Docks. (The only option available to the British was the Despretz–Niemann–Guthrie process). This was used first in September 1918 during the breaking of the Hindenburg Line. Mustard agent was dispersed
14th Army (German Empire) front came under the command of 51st Corps until it was withdrawn in February 1918.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