August 1, 1914 – The Great War erupts

August 1, 1914 – The Great War erupts

On August 1, 1914, four days after Austria-Hungary declared war on Serbia, two more great European powers—Russia and Germany—declare war on each other; the same day, France orders a general mobilization.

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September 6, 1914 – First Battle of the Marne begins

September 6, 1914 – First Battle of the Marne begins

On September 6, 1914, the French 6th Army under the command of General Michel-Joseph Manoury attacks the right flank of the German 1st Army, beginning the decisive First Battle of the Marne.

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