British war crimes September 1915 and continued their usage for the remainder of the war. This was done in retaliation for the use of chlorine by Imperial German Army the preceding April. Following the Imperial German Army's use of poison gas at Ypres, the commander of II Corps, Lieutenant General Sir Charles Ferguson, had said of poison gas: Mustard gas was first used effectively in World War I by the German army against British and Canadian soldiers near Ypres, Belgium, in 1917 and later also against the French Second Army. The name "Yperite" comes from its usage by the German army near the
Tanks in the German Army Tanks in the German Army This article on military tanks deals with the history of tanks serving in the German Army from World War I, the interwar period, and the Panzers of the German Wehrmacht during World War II, the Cold War and modern times. The development of tanks in World War I began as an attempt to break the stalemate which trench warfare had brought to the Western Front. The British and French both began experimenting in 1915, and deployed tanks in battle from 1916 and 1917 respectively. The Germans, on the other hand, were slower to develop tanks,