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Francisco Ferdinand is assassinated at Sarajevo
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Kaiser William II promised German support for Austria against Serbia.
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Emperor Franz Joseph declares war against Serbia.
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Belgium is invaded and defeated by Germany.
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Britain declares war on Germany due to the events of Germany invading and defeating Belgium.
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The Battle of the Frontiers -- 27,000 French soldiers in a day while thrusting through to the east of Paris, towards the German border.
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Germany defeats Russia in the Battle of Tennenburg.
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Russia is defeated in the Battle of Tennenburg by Erich Ludendorff and Paul von Hindenburg, leaders of the German army.
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Turkey enters the war on the side of Germany as three war ships shell the Russian port of Odessa.
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Italy enters the war on the side of the allies by declaring war on Austria-Hungary. The Italians focused their attacks on the mountain passes of Trentino and the valley of the Insonzo River.
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Bulgarians attack the poorly supplied troops of Serbia from the east. The Bulgarians capture Kumanova, severing the country's north-south rail line.
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Germany declares war on Portugal.
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Romania crosses over into Transylvania, declaring war with Austria-Hungary.
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Greece declares war on the Central Powers. Greek soldiers are added to the Allied ranks.
