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
Tanks in the German Army in firepower and mobility, but the XM1 was superior in armour protection. (Today we know this was true as regards a hit by a hollow charge; but against KE-attack the Leopard 2 was almost twice as well protected as the original M1.) In September 1977 1800 Leopard 2 were ordered, and the first batch of five was delivered on 25 October 1979. The Leopard 2 was made in many variations and became very popular for export in the nineties, when the shrinking German army offered many of its redundant Leopard 2s at a reduced price. It became successful enough in