On the evening of the 6th September, therefore, the fronts and positions of the opposing armies were roughly as follows:— ALLIES. _6th French Army._—Right on the Marne at Meux, left towards Betz. _British Forces._—On the line Dagny—Coulommiers—Maison. _5th French Army._—At Courtagon, right on Esternay. _Conneau’s Cavalry Corps._—Between the right of the British and the left of the French 5th Army. GERMANS. _4th Reserve and 2nd Corps._—East of the Ourcq and facing that river. _9th Cavalry Division._—West of Crecy. _2nd Cavalry Division._—North of Coulommiers. _4th Corps._—Rebais. _3rd and 7th Corps._—South-west of Montmirail. All these troops constituted the 1st German Army, which was directed against the French 6th Army on the Ourcq, and the British Forces, and the left of the 5th French Army south of the Marne. The 2nd German Army (IX., X., X.R., and Guard) was moving against the centre and right of the 5th French Army and the 9th French Army. On the 7th September both the 5th and 6th French Armies were heavily engaged on our flank. The 2nd and 4th Reserve German Corps on the Ourcq vigorously opposed the advance of the French towards that river, but did not prevent the 6th Army from gaining some headway, the Germans themselves suffering serious losses. The French 5th Army threw the enemy back to the line of the Petit Morin River after inflicting severe losses upon them, especially about Montçeaux, which was carried at the point of the bayonet. The enemy retreated before our advance, covered by his 2nd and 9th and Guard Cavalry Divisions, which suffered severely. Our Cavalry acted with great vigour, especially General De Lisle’s Brigade with the 9th Lancers and 18th Hussars. On the 8th September the enemy continued his retreat northward, and our Army was successfully engaged during the day with strong rearguards of all arms on the Petit Morin River, thereby materially assisting the progress of the French Armies on our right and left, against whom the enemy was making his greatest efforts. On both sides the enemy was thrown back with very heavy loss. The 1st Army Corps encountered stubborn resistance at La Trétoire (north of Rebais). The enemy occupied a strong position with infantry and guns on the northern bank of the Petit Morin River; they were dislodged with considerable loss. Several machine guns and many prisoners were captured, and upwards of two hundred German dead were left on the ground. The forcing of the Petit Morin at this point was much assisted by the Cavalry and the 1st Division, which crossed higher up the stream. Later in the day a counter-attack by the enemy was well repulsed by the 1st Army Corps, a great many prisoners and some guns again falling into our hands.