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Assassination of Archduke Franz Ferdinand of Austria
heir to the Austro-Hungarian throne, who was killed in Sarajevo along with his wife Duchess Sophie by Bosnian Serb Gavrilo Princip. -
Austria- Hungary, Serbia, Russia, The Netherlands
Austria-Hungary declares war on Serbia. Russia mobilizes.
The Netherlands declare neutrality. -
Germany
Germany declares war on Russia.
Germany and the Ottoman Empire sign a secret alliance treaty -
Germany declares war on France.
Belgium denies permission for German forces to pass through to the French border. -
August 6
Austria-Hungary declares war on Russia.
Serbia declares war on Germany. -
August 23rd
The BEF started its retreat from Mons. Germany invaded France. -
September 6th
Battle of the Marne started. -
October 29th
Turkey entered the war on Germany’s side. Trench warfare started to dominate the Western Front. -
January 19th
The first Zeppelin raid on Britain took place -
February 19th
Britain bombarded Turkish forts in the Dardanelles -
May 23rd
Italy declared war on Germany and Austria -
August 5th
The Germans captured Warsaw from the Russians -
February 21st
Start of the Battle of Verdun -
May 31st
Battle of Jutland: as a naval battle fought by the British Royal Navy's Grand Fleet under Admiral Sir John Jellicoe, against the Imperial German Navy's High Seas Fleet under Vice-Admiral Reinhard Scheer during the First World War -
September 15th
First use en masse of tanks at the Somme. -
February 1st
Germany’s unrestricted submarine warfare campaign started -
April 6th
USA declared war on Germany -
April 16th
France launched an unsuccessful offensive on the Western Front -
November 6th
Britain launched a major offensive on the Western Front -
July 15th
Second Battle of the Marne started. The start of the collapse of the German army
