In spite of a severe defeat inflicted upon the Guard Tenth and Guard Reserve Corps of the German Army by the First and Third French Corps on the right of the Fifth Army, it was not part of Gen. Joffre's plan to pursue this advantage; and a general retirement to the line of the Marne was ordered, to which the French forces in the more eastern theatre were directed to conform. A new Army (the Ninth) had been formed from three corps in the south by Gen. Joffre, and moved into the space between the right of the Fifth and left of the Fourth Armies. While closely adhering to his strategic conception to draw the enemy on at all points until a favorable situation was created from which to assume the offensive, Gen. Joffre found it necessary to modify from day to day the methods by which he sought to attain this object, owing to the development of the enemy's plans and changes in the general situation. In conformity with the movements of the French forces, my retirement continued practically from day to day. Although we were not severely pressed by the enemy, rearguard actions took place continually. On the 1st September, when retiring from the thickly wooded country to the south of Compiegne, the First Cavalry Brigade was overtaken by some German cavalry. They momentarily lost a horse artillery battery, and several officers and men were killed and wounded. With the help, however, of some detachments from the Third Corps operating on their left, they not only recovered their own guns, but succeeded in capturing twelve of the enemy's. Similarly, to the eastward, the First Corps, retiring south, also got into some very difficult forest country, and a somewhat severe rearguard action ensued at Villers-Cotterets, in which the Fourth Guards Brigade suffered considerably. On Sept. 3 the British forces were in position south of the Marne between Lagny and Signy-Signets. Up to this time I had been requested by Gen. Joffre to defend the passages of the river as long as possible, and to blow up the bridges in my front. After I had made the necessary dispositions, and the destruction of the bridges had been effected, I was asked by the French Commander in Chief to continue my retirement to a point some twelve miles in rear of the position I then occupied, with a view to taking up a second position behind the Seine. This retirement was duly carried out. In the meantime the enemy had thrown bridges and crossed the Marne in considerable force, and was threatening the Allies all along the line of the British forces and the Fifth and Ninth French Armies. Consequently several small outpost actions took place. On Saturday, Sept. 5, I met the French Commander in Chief at his request, and he informed me of his intention to take the offensive forthwith, as he considered conditions very favorable to success.