poison gas was considered a war crime to use after ww1
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.
Germany was the first country to use poison gas
Poison gas is really not a very good weapon of warfare, because although it can be very deadly, it is not very accurate; it goes wherever the wind blows it. So the gas you use might poison enemy troops, or it might poison your own troops. Poison Gas was outlawed by the Geneva Convention after WWI, thou it was still used in small amounts during WWII. This use did not include the massive use of poison gas to kill the Handicapped and then the Jewish people in WWII by the Nazi's (German's)
the decision to use poison gas
yes.
The use of poisonous gas was only banned after ww1
April 22. 1915 at Ypres, Belgium
Battle of Somme
Poison gas and blistered your skin and burned your eyes and that is the reason they wore gas masks
January 3rd, 1915.