The German right, on September 3, 1914, and September 4, 1914, at which time it was nearest to its desired goal of Paris, held the banks of the Marne from Epernay to the banks of the little tributary the Ourcq, which runs into the Marne from the north. This extreme right comprised the Second Corps and the Fourth Reserve Corps, encamped on the western bank of the little stream the Ourcq; while the Fourth Corps was given the honor of the tip of the right, being camped on the Marne at La Ferte-sous-Jouarre, supported by the Third Corps, the Seventh Corps and the Seventh Corps Reserve. The Ninth Cavalry Division occupied an advanced position west of Crecy and the Second Cavalry Division occupied an advanced position near the British army, north of Coulommiers. These troops constituted the First German Army, under the command of General von Kluck. The Allies' left, confronting this position, held strong reserves, and by the nature of the ground itself, was well placed to prevent any enveloping movement, dear to the German school of military tactics. It rested securely on the fortress of Paris, believed by its constructors to be the most fully fortified city in the world, and should the German right endeavor to encircle the left wing of the Allies, should it develop a farther westerly movement, it would but come in contact with the outer line of those defenses and thence be deflected in such an enormous arc as to thin the line beyond the power of keeping it strong enough to resist a piercing attack at all points. Clearly, then, as long as the extreme left of the Allies remained in contact with the defenses of Paris, an enveloping movement was not possible on the easterly flank. Facing the German extreme right, was the Sixth French Army, one of the great reserves of General Joffre, which had been steadily building up since August 29, 1914, with its right on the Marne and its left at Betz, in the Ourcq Valley, encamped on the western side of that stream, facing the Second and Fourth Corps of the Germans. The strengthening of that army from the forces at Paris was hourly, and while three or four days before it had been felt that the Sixth French Army was too weak to be placed in so vital a point--that it should have been supplemented with the Ninth Army--the results justified the French generalissimo's plans and more than justified his confidence in the British Army, or Expeditionary Force, which faced the tip of the German right wing drive and was encamped on a line from Villeneuve le Comte to Jouy le Chatel, the center of the British army being at a point five miles southeast of Coulommiers. This army was under the command of General Sir John French.