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First Battle of Ypres happened in 1914.
1914 - the Battle of Mons, and the First Battle of Ypres. 1915 - The Second Battle of Ypres. 1916 - The Battle of the Somme 1917 - The Third Battle of Ypres, The Battle of Cambrai. 1918 - The German Spring Offensive, The Allied Counter-Offensive.
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There.
the end of the ypres ended in 2001 =]