The Battle of the Marne (French: Premiere bataille de la Marne, also known as the Miracle of the Marne, Le Miracle de la Marne) was a World War I battle fought from 6 -- 10 September 1914. It resulted in an Allied victory against the German armies in the west. The battle was the culmination of the German advance into France and pursuit of the Allied armies which followed the Battle of the Frontiers in August and had reached the eastern outskirts of Paris. A counter-attack by six French armies and the British Expeditionary Force (BEF) along the Marne River forced the Imperial German Army to retreat north-west, leading to the First Battle of the Aisne and the Race to the Sea. The battle was a victory for the Allied Powers but led to four years of trench warfare stalemate on the Western Front.

Answer this question based on the passage: who won in the first battle of marne? OK. Let's think. My stream of consciousness:
The important part for answering this question is: The battle was a victory for the Allied Powers but led to four years of trench warfare stalemate on the Western Front. The answer is the Allied Powers.