Battle of Ypres

There were four Battles of Ypres during World War I:

• First Battle of Ypres (October 19 – November 22, 1914)
• Second Battle of Ypres (April 22 – May 15, 1915)
• Third Battle of Ypres (July 31 – November 6, 1917) (also known as Passchendaele)
• Fourth Battle of Ypres (September 28 – October 2, 1918) (also known as the Battle of Ypres 1918)