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Assassination of Archduke Ferdinand
The assassination of Archduke Franz Ferdinand of Austria, heir presumptive to the Austro-Hungarian throne, and his wife Sophie, Duchess of Hohenberg, occurred on 28 June 1914 in Sarajevo when they were mortally wounded by Gavrilo Princip. -
Investigation of Death
On July 13, 1914, Friedrich von Wiesner, an official of the Austro-Hungarian Foreign Office, reports back to Foreign Minister Leopold von Berchtold the findings of an investigation into the assassination of Archduke Franz Ferdinand, heir to the Austrian throne, and his wife Sophie the previous June 28, in Sarajevo, Bosnia. -
Austria-Hungary declares war on Serbia
One month to the day after Archduke Franz Ferdinand of Austria and his wife were killed by a Serbian nationalist in Sarajevo, Austria-Hungary declares war on Serbia, effectively beginning the First World War. -
Germany declares War on Russia
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Germany declares War on France
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German troops enter Belgium
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Great Britain Declares war on Germany
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Moltke Orders the Schiefflen Plan to Proceed
The Schlieffen Plan was the name given, after the First World War, to German war plans and the influence of Field Marshal Alfred von Schlieffen and his thinking on the invasion of France and Belgium on 4 August 1914. Schlieffen was Chief of the General Staff of the German Army from 1891 to 1906 -
Austro-Hungarian troops invade Serbia
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French troops invade Lorraine
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British Expeditionary Force arrives in France
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First German aircraft shot down by Allied plane
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Canadian troops arrive in Britain
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Italy declares War on Austria-Hungary
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Germany declares War on Portugal
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Addition of War Tank
The first tanks were British, and they went into action against the Germans on Sept. 15, 1916, near Flers in northern France, during the Battle of the Somme in World War I. -
United States declares War on Germany
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Greece declares War on The Central Powers
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Trench Warefare
Trench warfare prevailed on the Western Front from late 1914 until the Germans launched their Spring Offensive on 21 March 1918. -
Treaty of Versailles Signed
The Treaty of Versailles (French: Traité de Versailles) was the most important of the peace treaties that brought World War I to an end. The Treaty ended the state of war between Germany and the Allied Powers.