As early as Sept. 8 the menace directed by Gen. Maunoury against the German right was beginning to tell.
The enemy brought back from the south to the north two army corps and wheeled about facing west.
Thus it presented a weak point to the English Army, which, having advanced from the line stretching from Rozoy to Lagny, (on the 6th,) straightened its line toward the north, crossed the Marne on the 9th, thus flanking the German Army already battling with Gen. Maunoury.
On the right of the British d'Espéray's army also crossed the Marne, forcing the enemy to retreat, and at the same time supporting the action of its neighbors, that is to say, the English Army on the left and Foch's army on the right.
Map of Operations in France During First Four Months of the War
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(1) Point where Germans failed to hold Nancy, Sept. 12, 1914.
(2) Extreme limits of the dash to Paris, terminating Sept. 8, 1914.
(3) Point to which the first unsuccessful flanking movement against the French left wing extended, Aug. 30, 1914.