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en.wikipedia.org/wiki/Chemical_weapons_in_World_War_I

Although the use of toxic chemicals as weapons dates back thousands of years, the first large .... In what became the Second Battle of Ypres, the Germans used gas on three more occasions; on 24 April against the ...... In the years following World War One, there were many conferences held in attempts to abolish the use of ...

www.history.com/this-day-in-history/germans-introduce-poison-gas

On this day in History, Germans introduce poison gas on Apr 22, 1915. ... In the years following World War I, Britain, France, and Spain used chemical weapons in various colonial struggles, despite ... Battle of Jutland, WWI, World War I topic.

www.historylearningsite.co.uk/world-war-one/the-western-front-in-world-war-one/poison-gas-and-world-war-one

Poison gas was probably the most feared of all weapons in World War One. Poison gas was indiscriminate and could be used on the trenches even when no  ...

www.historyinanhour.com/2014/04/22/fritz-haber-gas-warfare-summary

Apr 22, 2014 ... But the Germans, wary of stepping into the cloud of poison gas protected ... For his work, Haber was personally made an honorary captain by ...

chemicalweapons.cenmag.org/when-chemicals-became-weapons-of-war

Feb 27, 2015 ... Even though poison gas was not an efficient killing weapon on WWI battlefields ..... The Italians used gas warfare against Ethiopia, for example.

chemicalweapons.cenmag.org/who-was-the-father-of-chemical-weapons

He made important developments in organic chemistry (his doctoral thesis was on ... Haber (pointing) instructs soldiers about chlorine gas deployment in WWI.

spartacus-educational.com/FWWgas.htm

Poison Gases a history of Chemical Warfare during the First World War. ... The Germans first used chlorine gas cylinders in April 1915 when it was employed ...

www.firstworldwar.com/weaponry/gas.htm

First World War.com - A multimedia history of world war one. ... The debut of the first poison gas however - in this instance, chlorine - came on 22 April 1915, .... The French army occasionally made use of a nerve gas obtained from prussic acid.

www.chemheritage.org/historical-profile/fritz-haber

Jul 21, 2015 ... He developed a new weapon—poison gas, the first example of ... the anti-Jewish decrees of the Nazi regime made his position untenable.

www.bbc.com/news/magazine-31042472

Jan 30, 2015 ... Gas terrified soldiers in WW1, but it killed comparatively few of them, ... The most widely used, mustard gas, could kill by blistering the lungs and ...