// todo need optimize like in event.jsp. Add indexing or not indexing this page. Second Battle of Ypres marks the first use of chemical weapons. (5h 39min, apr 22, 1915 y – 12h 47min, may 5, 1915 y) (Timeline)

Second Battle of Ypres marks the first use of chemical weapons. (5h 39min, apr 22, 1915 y – 12h 47min, may 5, 1915 y)

Added to timeline:

WWI timeline

ByJeremy

10 Oct 2017

Date:

5h 39min, apr 22, 1915 y

12h 47min, may 5, 1915 y

~ 13 days

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