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 was enough equipment for about 40 army divisions. The Germans integrated the Czech industry, mainly the Skoda factories, becoming part of the German military production machine and continued to produce tanks and other weapons for Germany. So when Germany invaded France, three full German Panzer divisions were equipped with Czech tanks. One division was equipped with the Czech type 35 light tank (10 tons) renamed Panzer 35, and two divisions were equipped with the type 38 light tank (10 tons) renamed Panzer 38. The Panzer 35 had a crew of four and carried a Czech 37mm gun (with 72 rounds)