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  Archduke Franz-Ferdenand is assassinated by Serbian Extremist Gavrilo Princip. Gavrilo is tried and executed for the crime. This sparks Austria-Hungary into war with the Serbs.
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  Austria-Hungary Declares war on Serbia and Russia Mobilizes. Germany warns Russia to cease mobilization, but Russia replies that mobilization is against Austria-Hungary only.
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  Germany invades Luxembourg with assistance of Austria-hungary. This will be the first military action on the western front.
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  Shots fired by the Allies. Montenegro declares war on Austria-Hungary and the Ottoman Empire closes the Dardenelles.
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  Serbia invaded, by this time, many countries at war with the Central Powers
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  First Meeting of the League of Nation is in progress. This is the day that the war is officially over.