How Stuff Works. "How Biological and Chemical Warfare Works." 2002. <http://www.howstuffworks.com/Biochem-war.htm>(10 January 2003). Roman Legions regularly used burning sulphur (SO2, SO3, H2S, H2SO4(in rain/fog) to at least irritate, incapacitate, or at best, kill enemies in immobile situations; fortified towns, settlements against geographic barriers; islands, cliffs, bodies of water, etc. Opinions differ as to whether the Legions developed poison gas themselves, or if their own survivors/allies reported how to use it after hard experience. Similarly, opinions differ about the logistics and practicality of raw sulphur transport, and the (un)liklihood of a somewhat bulky(and nasty)materiel being cheerfully carried by a notoriously lightly-packed Legionnaire. It is possible that free, native, naturally-occurring sulphur deposits were scouted, as would have been other staples, like water, wood, game, etc., and if present, utilized, from a point upwind any immovable objective.
It was the Germans and it was Chlorine Gas
Germany was the first country to use poison gas
Chlorine
Poison gas is brought into WWI by the Germans. Both sides used gas, although the Germans were the first to use poison gas
In the beginning of the war, only the Axis used poison gas (mustard gas was the first kind to be used), but by the end of the war, both sides used poison gas as a weapon.
Poison gas was first used during this battle
No. Poison gas was first used in World War 1.
Poison gas was first used by the Germans at Second Battle of Ypres during the First World War.
the poison gas was used because it makes people suffer first then die. it also doesn't leave a fingerprint
April 22. 1915 at Ypres, Belgium
I said so
Battle of Somme