On this day the 6th French Army was heavily engaged west of the River Ourc. The enemy had largely increased his force opposing them, and very heavy fighting ensued, in which the French were successful throughout. The left of the 5th French Army reached the neighbourhood of Château-Thierry after the most severe fighting, having driven the enemy completely north of the river with great loss. The fighting of this army in the neighbourhood of Montmirail was very severe. The advance was resumed at daybreak on the 10th up to the line of the Ourcq, opposed by strong rearguards of all arms. The 1st and 2nd Corps, assisted by the Cavalry Division on the right, the 3rd and 5th Cavalry Brigades on the left, drove the enemy northwards. Thirteen guns, seven machine guns, about 2,000 prisoners, and quantities of transport fell into our hands. The enemy left many dead on the field. On this day the French 5th and 6th Armies had little opposition. As the 1st and 2nd German Armies were now in full retreat, this evening marks the end of the battle which practically commenced on the morning of the 6th instant, and it is at this point in the operations that I am concluding the present despatch. Although I deeply regret to have had to report heavy losses in killed and wounded throughout these operations, I do not think they have been excessive in view of the magnitude of the great fight, the outlines of which I have only been able very briefly to describe, and the demoralisation and loss in killed and wounded which are known to have been caused to the enemy by the vigour and severity of the pursuit. In concluding this despatch I must call your lordship's special attention to the fact that from Sunday, Aug. 23, up to the present date (Sept. 17), from Mons back almost to the Seine, and from the Seine to the Aisne, the Army under my command has been ceaselessly engaged without one single day's halt or rest of any kind. Since the date to which in this dispatch I have limited my report of the operations, a great battle on the Aisne has been proceeding. A full report of this battle will be made in an early further despatch. It will, however, be of interest to say here that, in spite of a very determined resistance on the part of the enemy, who is holding in strength and great tenacity a position peculiarly favourable to defence, the battle which commenced on the evening of the 12th inst. has, so far, forced the enemy back from his first position, secured the passage of the river, and inflicted great loss upon him, including the capture of over 2,000 prisoners and several guns.--I have the honour to be, your lordship's most obedient servant, (Signed) J. D. P. FRENCH, Field-Marshal, Commanding-in-Chief, the British Forces in the Field. II. Oct. 8, 1914. MY LORD-- I have the honour to report the operations in which the British forces in France have been engaged since the evening of Sept. 10.