The Battle of the Marne was won by the Allies (primarily France and Britain, later with support from other Allied forces).

More precisely, there were two major World War I battles called the Battle of the Marne:

  • First Battle of the Marne (September 1914):
    Won by French and British forces, who stopped the German advance toward Paris and pushed the Germans back to the Aisne River.
  • Second Battle of the Marne (July–August 1918):
    Again an Allied victory, this time involving French, American, British, and Italian troops, and it marked the start of the final German retreat that led to the end of the war.

If someone asks “who won the Battle of the Marne” without specifying, they almost always mean the First Battle of the Marne , and the answer is: the Allies (France and Britain) defeated Germany.

Information gathered from public forums or data available on the internet and portrayed here.