13h 39min, apr 16, 1915 y - Battle of ypres
Description:
The battle of Ypres was decline for the Canadians, I think this because in this battle, the German soldiers released chlorine gas against the Canadian soldiers which can be used as oxidizing agent.
Added to timeline:
Date:
13h 39min, apr 16, 1915 y
Now
~ 109 years ago