The German Army dispersed chlorine gas over Allied lines at Ypres on 22 April 1915. This chemical warfare was a major component of the first global war and first total war of the 20th century. North of France, April 24. Poison gas is a substance used in WWI that is scentless and sightless. About three percent of gas casualties were fatal, but hundreds of thousands … It worked in several ways. The killing capacity of gas was limited — only 3% of combat deaths were due to gas … Poison Overview Poison gasses were one of the few weapons during WW1 that could be used within trench warfare. Furthermore, who used the most poison gas in ww1? Considered uncivilised prior to World War One, the development and use of poison gas was necessitated by the requirement of wartime armies to find new ways of overcoming the stalemate of unexpected trench warfare. Poison gas was initially released from cylinders, but this required ideal weather conditions and could be very risky. WWI Document Archive > 1915 Documents > The Use of Poison Gas. Germany (taking a cue from France) first used poison gas on a large scale against Allied troops manning trenches near Ypres, Belgium, on April 22, 1915. The first time that poison gas had been used effectively in war was on April 22, 1915 at the battle of Ypres. Gas was first used by the Germans in 1915 at the Second Battle of Ypres on the 22 April .In the beginning it was discharged from cylinders , and this made the wind direction a crucial consideration, this and the trench system made it difficult to predicate whose lines would be affected and in many cases the … By: Kim and Bobbi Background It was invented by two German Scientists named Lommel and Steinkopf who wanted to create a poisonous weapon that will harm and kill a soldier. The gas warfare of World War One was so horrific that it has rarely been used since. After the 1925 Geneva Protocol prohibited chemical weapons their use further diminished. Weapons of War - Poison Gas. The Germans used chlorine gas on the French-Algerian troops, killing large numbers of soldiers and causing the rest to rush into panicked retreat, as they had no protection against its choking effects. The gases used ranged from disabling chemicals such as tear gas and the more severe, mustard gas to killing agents like phosgene. By the end of the war the Germans produced the most poison gas with 68,000 tons, the French second with approximately 36,000 tons and the British produced approximately 25,000 tons. -- There is no doubt that the action which has … 22 April, 1915. In the first British gas attack, at Loos in September 1915, much of the gas was blown back into the faces of the British troops. In the interwar period the French and Spanish used it in Morocco and the Bolsheviks used it against rebels.  Poison gas is a common weapon in WWI to put people to death or temporarily disable someone. The use of poison gas in World War I was a major military innovation. It was useful as a surprise weapon. The gases ranged from disabling chemicals, such as tear gas and the severe mustard gas, to lethal agents like phosgene and chlorine.This chemical warfare was a major component of the first global war and first total war of the 20th century. The killing capacity of gas was limited — only 4% of combat deaths were due to gas … From 1916, gas was employed in shells instead, which allowed attacks from a … When poison gas first came along it was a very popular choice and most believed it would be a weapon to change the tides of war. The use of poison gas in World War I was a major military innovation. Will Irwin, correspondent From the New York Tribune, April 25, 26, 27, 1915. It could travel in the gas cloud or mist, attack, the wind is used to carry the gas to the enemy lines. The picture to the left depicts how they could be used in trench warfare. 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