apr 22, 1915 - Second Battle of Ypres
Description:
From April 22 to May 25, 1915
First large scale use of chemical weapons.
Some 10,000 troops were affected by the gaz.
Half of them died within 10minutes.
Looses were estimated at 69,000 for the Allied troops against 35,000 German.
Added to timeline:
Battles on the Western Front during WW1
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