However I failed in this ambition, but merely because the road I was following did not keep on directly west, but drifted off toward the river. I only became aware of this change in direction when we intersected a cross-road, and then I ran squarely up against a picket-post, the men having a fire burning to keep them warm. The light of the flames revealed everything within a radius of a hundred feet, and I could distinguish a dozen infantrymen sitting and lying about, while a couple of others marched back and forth across the road. I wanted to get farther south, but had only wriggled through the bushes a few yards in that direction before sinking to my knees in mud and water, and being compelled to crawl back. There was nothing left except to circle the fire in the opposite direction, and come out on the road below. I must have used up a good quarter of an hour getting through. Twice I made missteps, and some racket, but there was no challenge. I emerged at the opening of a small ravine, where I could lie down flat behind a low rock, and look back up the road, which ran down hill. I felt reasonably certain Billie would have to come this way if he intended to cross the river at Carter's Ford, and I knew of no other place he could cross this side the big bridge. The aide would be riding with him, of course, and that would make me certain of my man when he came, although how I was ever going to manage was more than I had as yet figured out. I must have been there some twenty minutes, maybe more, burrowing down into the mud under the lee of the stone, staring straight up the hill at the fire. The post was relieved while I lay there, the fellows going off duty tramping past so close I could have touched them. I could still hear the tread of their feet when one of the new guard yelled out "Halt!" and I saw two or three men spring up from around the fire, while the corporal in command ran out into the middle of the road. Some sort of a rig was coming down the hill, with a cavalry officer--judging from his cape--riding along close beside it. I was not able to see very plainly the way the light fell, but the contrivance looked to me like one of those old-fashioned, two-wheeled carryalls, with a low top over it, and drawn by a horse not much bigger than a pony. The officer dug in his spurs and got ahead, leaning over to whisper to the corporal, who stepped back saluting. The carryall never stopped at all, the pony trotting along unconcernedly, and it was so dark beneath the top I could not see sign of anybody. It was a queer-looking outfit, but I had no doubt this would be Billie, and the despatches.