Chemical warfare dates back thousands of years, but the first large-scale use of chemical weapons was during World War I. Austria-Hungary, France, the German Empire, the United Kingdom, and the United
A French gas attack on German trenches in Flanders, Belgium (1917).
Russian Red Cross nurses tend to gassed Russians brought from the front lines, 1915
British emplacement after German gas attack (probably phosgene)
A bell used as a gas alarm, December 1916.
Fritz Haber
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Fritz Jakob Haber was a German chemist who received the Nobel Prize in Chemistry in 1918 for his invention of the Haber process, a method used in industry to synthesize ammonia from nitrogen gas and h
Haber's first wife, Clara Immerwahr
The grave of Fritz and Clara Haber (née Immerwahr) in the Hörnli graveyard of Basel, Switzerland