(Signed) J.D.P. FRENCH, Field Marshal, Commander in Chief, British Forces in the Field. II. *The Battle of the Marne.* 17th September, 1914. My lord: In continuation of my dispatch of Sept. 7, I have the honor to report the further progress of the operations of the forces under my command from Aug. 28. On that evening the retirement of the force was followed closely by two of the enemy's cavalry columns, moving southeast from St. Quentin. The retreat in this part of the field was being covered by the Third and Fifth Cavalry Brigades. South of the Somme Gen. Gough, with the Third Cavalry Brigade, threw back the Uhlans of the Guard with considerable loss. Gen. Chetwode, with the Fifth Cavalry Brigade, encountered the eastern column near Cerizy, moving south. The brigade attacked and routed the column, the leading German regiment suffering very severe casualties and being almost broken up. The Seventh French Army Corps was now in course of being railed up from the south to the east of Amiens. On the 29th it nearly completed its detrainment, and the French Sixth Army got into position on my left, its right resting on Roye. The Fifth French Army was behind the line of the Oise, between La Fere and Guise. The pursuit of the enemy was very vigorous; some five or six German corps were on the Somme, facing the Fifth Army on the Oise. At least two corps were advancing toward my front, and were crossing the Somme east and west of Ham. Three or four more German corps were [Transcriber: original 'wree'] opposing the Sixth French Army on my left. This was the situation at 1 o'clock on the 29th, when I received a visit from Gen. Joffre at my headquarters. I strongly represented my position to the French Commander in Chief, who was most kind, cordial, and sympathetic, as he has always been. He told me that he had directed the Fifth French Army on the Oise to move forward and attack the Germans on the Somme, with a view to checking pursuit. He also told me of the formation of the Sixth French Army on my left flank, composed of the Seventh Army Corps, four reserve divisions, and Sordet's corps of cavalry. I finally arranged with Gen. Joffre to effect a further short retirement toward the line Compiegne-Soissons, promising him, however, to do my utmost to keep always within a day's march of him. In pursuance of this arrangement the British forces retired to a position a few miles north of the line Compiegne-Soissons on the 29th. The right flank of the German Army was now reaching a point which appeared seriously to endanger my line of communications with Havre. I had already evacuated Amiens, into which place a German reserve division was reported to have moved. [Illustration: Map 4.--Sept. 6 (Sunday), evening. First advance toward the line of the Grand Morin.] Orders were given to change the base to St. Nazaire, and establish an advance base at Le Mans. This operation was well carried out by the Inspector General of Communications.