Archduke Francis Ferdinand is assassinated.
July 28, 1914
Austria-Hungary declares war on Serbia, beginning World War I.
August 2-7, 1914
Germany invades Luxembourg and Belgium. France invades Alsace. British forces arrive in France. Nations allied against Germany were eventually to include Great Britain, Russia, Italy, Australia, New Zealand, South Africa, Rhodesia, Romania, Greece, France, Belgium, United States, Canada, Serbia, India, Portugal, Montenegro, and Poland.
August 10, 1914
Austria-Hungary invades Russia.
September 9, 1914
Allied forces halt German advance into France during First Battle of the Marne.
February 18, 1915
Germany begins naval blockade of Great Britain.
April 25, 1915
Allied forces land on the Gallipoli Peninsula of the Ottoman Empire.
