In the first place, our left army had been able to occupy the line of Sézanne, Villers-St. Georges and Courchamps. Furthermore, the British forces, gathered between the Seine and the Marne, flanked on their left by the newly created army, were closely connected with the rest of our forces.
Allies' armies ready.
This was precisely the disposition which the General in Chief had wished to see achieved. On the 4th he decided to take advantage of it, and ordered all the armies to hold themselves ready. He had taken from his right two new army corps, two divisions of infantry, and two divisions of cavalry, which were distributed between his left and his centre.
On the evening of the 5th he addressed to all the commanders of armies a message ordering them to attack.
Joffre orders the advance.
"The hour has come," he wrote, "to advance at all costs, and to die where you stand rather than give way."
If one examines on the map the respective positions of the German and French armies on September 6 as previously described, it will be seen that by his inflection toward Meaux and Coulommiers General von Kluck was exposing his right to the offensive action of our left. This is the starting point of the victory of the Marne.
The Battle of the Marne.
On the evening of September 5 our left army had reached the front Penchard-Saint-Soutlet-Ver. On the 6th and 7th it continued its attacks vigorously with the Ourcq as objective. On the evening of the 7th it was some kilometers from the Ourcq, on the front Chambry-Marcilly-Lisieux-Acy-en-Multien. On the 8th, the Germans, who had in great haste reinforced their right by bringing their Second and Fourth Army Corps back to the north, obtained some successes by attacks of extreme violence. They occupied Betz, Thury-en-Valois, and Nanteuil-le-Haudouin. But in spite of this pressure our troops held their ground well. In a brilliant action they took three standards, and, being reinforced, prepared a new attack for the 10th. At the moment that this attack was about to begin the enemy was already in retreat toward the north. The attack became a pursuit, and on the 12th we established ourselves on the Aisne.
Enemy left exposed.