Canadas important dates of history By facebooker_812845533 Jul 28, 1914 world war 1 the beginning of WW1 Period: Jul 28, 1914 to Mar 23, 1946 important dates Nov 11, 1918 WW1 end end of world war 1 Sep 3, 1939 world war 2 starts britain and france declare war on Germany Jun 6, 1944 D-Day in Normandy a huge operation formed by the allied forces to push back Germanys forces Sep 16, 1945 world war 2 ends germany is defeated and Japan surrenders