 Facing greatly superior numbers, short of ammunition, and exhausted from a series of earlier actions, Colonel Herbinger has informed me that the position was untenable and that he has been forced to fall back tonight on Dong Song and Thanh Moy.All my efforts are being applied to concentrate our forces at the passes around Chu and Kép.The enemy continues to grow stronger on the Red River, and it appears that we are facing an entire Chinese army, trained in the European style and ready to pursue a concerted plan.