The battle of the Marne could be argued as either a draw or a victory, as a consequence the Germans had to retreat and establish a line of defenses which led to the stalemate and horror of the trenches.
The Germans were close to capturing Paris, the British Expeditionary Force had just retreated from Mons in Belgium when they and their French allies noticed a 50 mile wide gap between 2 German armies, the allies threw themselves into this gap and the Germans, realising that they would be encircled and destroyed were forced to retreat to a safer position where it would be easier to defend itself, it is particulary lucky that this 50 mile wide gap was noticed, because of this, history would refer to this as 'The miracle of the Marne'.
The Battle of the Marne (also known as the Miracle of the Marne) was a First World War battle fought between 5 and 12 September 1914. It resulted in a Franco-British victory against the German Army under Chief of Staff Helmuth von Moltke the Younger. The battle effectively ended the month-long German offensive that opened the war and had reached the outskirts of Paris. The counter-attack of Allied forces during the First Battle of the Marne ensured that a quick German victory was impossible, and set the stage for four years of trench warfare on the Western Front.