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August 1, 1914
Germany declares war on Russia. -
February 19, 1915
The Dardanelles Campaign begins. -
May 31, 1916
The Battle of Jutland, the major naval battle of the war, begins. -
March 15, 1917
Russian Tsar Nicholas II abdicates. -
April 6, 1917
The United States declares war on Germany. -
July 31, 1917
The Battle of Passchendaele (also known as the Third Battle of Ypres) begins. -
January 8, 1918
U.S. President Woodrow Wilson issues his Fourteen Points to peace.
