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
History of the German Army Aviation Corps helicopters. The Mil Mi-24 fleet, however, was no longer used and subsequently sold off. In 1991, German Army Aviation Corps helicopters provided humanitarian aid to Kurdish refugees in northern Iraq. From October 1991 onwards, Sikorsky CH-53G of the German Army Aviation Corps provided the means of transport for UN weapons inspectors in Iraq. In 1993 and 1994, in Somalia, Bell UH-1D helicopters equipped with machine-guns were used for the first time in earnest as a means for self-protection. On 1 April 1994, the German Army Aviation Corps Brigade 10 was established. This brigade united all German Army Aviation Corps transport