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
Action of 25 September 1917 reserve to take over the 33rd Division front). Massed small-arms fire repulsed the attack against the 70th Brigade, despite SOS signals to the artillery being obscured by mist and a smaller attempt at was also defeated. Books Theses Action of 25 September 1917 The Action of 25 September 1917 was a German methodical counter-attack ("Gegenangriff") which took place during the Third Battle of Ypres on the Western Front during the First World War. On the front of the British X Corps (Lieutenant-General Thomas Morland) at the south-east side of the Gheluvelt Plateau, two regiments of the German 50th Reserve Division