The fog yet held the secrets of the valley safely locked within its brown hand, and I could penetrate none of its mysteries. It was like gazing down from some headland into a silent, unvexed sea. But directly across from where I stood, apparently along the summit of another chain of low hills similar to those we occupied, I could perceive the flames of numerous camp-fires leaping up into sudden radiance, while against the brightening sky a great flag lazily flapped its folds to the freshening breeze. Evidently our opponents were first astir, and the headquarters of some division of the enemy must be across yonder. As I gazed, other fires burst forth to left and right, as far as the unaided eye could carry through the gloom, and I was thus enabled to trace distinctly those advanced lines opposing us. Experience told me their position must be a strong one, and their force heavy. As I turned to mark our own formation, the roll of drums rang out, while the quickening notes of the reveille sounded down the long lines of slumbering men. Life returned, as if by magic, to those motionless forms, and almost in a moment all below me became astir, and I could clearly distinguish the various branches of the service, as they stretched away commingled upon either hand. We were evidently stationed close to the centre of our own position. Our battle-line was not so extended as the one across the valley; apparently there were fewer troops along our front than theirs, nor could I perceive to the southward, now that dawning day somewhat clarified the scene, any evidence of reserve force; yet what I saw looked extremely well, and my heart bounded proudly at the sturdy promise of our fighting men. The cavalry appeared to be principally concentrated at the foot of the hill upon which I stood, although at the distant wings I was able to perceive some flying guidons that told me of the presence of numerous troops of horse. I marked it all with eager, kindling eyes, for it was a sight to cheer the heart of any soldier--those dark, dense squares where the infantry were massed, and battery after battery of flying artillery ranged along the ridge. But it seemed to me the larger, heavier force had been concentrated upon our left, massed there in deeper lines, as if that were the point selected from whence the attacking wedge was to be driven. The intervening ground sloped so gently forward, while the hill crest was so thickly crowned with trees, it looked an ideal position from which to advance in line of attack. Upon my right there appeared a break in the solidity of our line, but even as I noted it, wondering at the oversight, the dense front of an infantry column debouched from a ravine and, marching steadily forward, filled the gap. I could distinctly mark the wearied manner in which the men composing it flung themselves prostrate on the hard ground the moment they were halted--doubtless all through the long hours of the black night they had