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
Collaborationist Chinese Army Japanese weapons. Their Japanese advisers viewed the army as a strictly infantry force, providing it only with minimal artillery and armor, and what little they did receive was mostly used by Wang's three Capital Guard divisions. The main type of artillery in use by the Nanjing Army were medium mortars, with 31 field guns (including Model 1917 mountain guns) being in use by the Guards divisions. The Japanese provided 18 Type 94 tankettes in 1941 so that the Wang Jingwei regime would have at least a token armored force. Records indicate that the Nanjing Army was also given 20 armored