Question

Which army was forced to retreat at Mons?
in a complete sentence

Answer 1

The Great Retreat (French: Grande Retraite), also known as the Retreat from Mons, is the name given to the long withdrawal to the River Marne in August and September 1914 by the British Expeditionary Force (BEF) and the French Fifth Army, Allied forces on the Western Front in the First World War, after their defeat by the armies of the German Empire at the Battle of Charleroi (21 August) and the Battle of Mons (23 August).

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