Chemical weapons and the United Kingdom army against British and Canadian soldiers near Ypres, Belgium, in 1917 and later also against the French Second Army. The name Yprite comes from its usage by the German army near the town of Ypres. The Allies did not use mustard gas until November 1917 at Cambrai, France, after the armies had captured a stockpile of German mustard-gas shells. It took the British more than a year to develop their own mustard gas 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
1917 French Army mutinies Passchendaele, with varied success but pertinently relieving pressure on the French to the south. It would not be until early-1918 when the US troops considered themselves ready to accept operational responsibilities, did French morale improve. The Allies withstood the German 1918 Spring Offensive, and held their ground until November, when the 2-3 year British naval blockade of Germany paid dividends. Starved of food, Germany collapsed on the home front. Their leadership was compelled to sue for peace, notwithstanding that hardly an Allied foot had been set on German soil. 1917 French Army mutinies The 1917 French Army mutinies took place