Bruising and Bleeding. Bruising or bleeding after an injury is normal. However, some people have disorders that cause them to bruise or bleed too easily. Sometimes people bleed without any obvious triggering event or injury.
The skin of victims of mustard gas blistered, the eyes became very sore and they began to vomit. Mustard gas caused internal and external bleeding and attacked the bronchial tubes, stripping off the mucous membrane. This was extremely painful and most soldiers had to be strapped to their beds.
Gas and Flame Attack-National Archives Photo courtesy of Indiana War Memorial. The stalemate of WW1 left men caught in trenches for months and months. Gas usage had been considered uncivilized, but the French resorted to its usage in August, 1914 in an attempt to rout the Germans. Unfortunately, the Germans were the first to give gas warfare serious development and it became used extensively before the war was over. The first use of gas warfare by the Germans was January 3, 1915 and was dispersed by an artillery shell.