-
Germany declares war on Russia.
-
The Dardanelles Campaign begins.
-
The Battle of Jutland, the major naval battle of the war, begins.
-
Russian Tsar Nicholas II abdicates.
-
The United States declares war on Germany.
-
The Battle of Passchendaele (also known as the Third Battle of Ypres) begins.
-
U.S. President Woodrow Wilson issues his Fourteen Points to peace.