Glenbrook Tunnel War One. The first was Chlorine gas which was introduced by the Germans at the Second battle of Ypres in April 1915. This was followed by the use of Phosphene Gas, also introduced by the Germans. These attacked victims' respiratory organs causing coughing and choking. The Germans used Mustard Gas, a more advanced gas, for the first time at Riga (or Yperite) in September 1917. It caused both internal and external blistering in its victims. The blistering was often delayed and remained in the ground for weeks afterwards making capture of infected trenches dangerous. Protection against mustard gas was far
British home army in the First World War as still essentially a body of amateurs and echoed the War Office's earlier call for a smaller, better trained auxiliary. At the end of 1917, the huge losses suffered by the BEF during the Third Battle of Ypres, the implications of the October Revolution in Russia, the Austro-German success in the Battle of Caporetto on the Italian Front and the anticipated German Spring Offensive generated a surge in demand for manpower. In December, the army was prioritised below the navy, the Royal Flying Corps, the shipbuilding, aircraft and tank manufacturing industries, and food and timber production for the allocation of