The rear guard turned back and waited, and in a few minutes the Southern horsemen came in sight, opening fire at once. Their infantry, too, soon appeared in the woods and fields and the dark hours before the dawn were filled with the crackle of small arms. Dick kept close to Colonel Winchester who anxiously watched the pursuit, throwing his own regiment across the road, and keeping up a heavy fire on the enemy. The Union loss was not great as most of the firing in the dusk, of necessity, was at random, and Dick heard bullets whistling all about him. Some times the bark flew from trees and now and then there was a rain of twigs, shorn from the branches by the showers of missiles. It was arduous work. The men were worn by the darkness, the uncertainty and the incessant pursuit. The Northern rear guard presented a strong front, retreating slowly with its face to the enemy, and always disputing the road. Dick meanwhile could hear through the crash of the firing the deep rumble of Pope's great army with its artillery and thousands of wagons continually marching toward the Rappahannock. His mind became absorbed in a vital question. Would Lee and Jackson come up before they could reach the bigger river? Would a battle be forced the next day while the Union army was in retreat? He confided his anxieties to Warner who rode by his side. “I take it that it's only a vanguard that's pursuing us,” said the Vermonter. “If they were in great force they'd have been pushing harder and harder. We must have got a good start before Lee and Jackson found us out. We know our Jackson, Dick, and he'd have been right on top of us without delay.” “That's right, George. It must be their cavalry mostly. I suppose Jeb Stuart is there leading them. At any rate we'll soon know better what's doing. Look there toward the east. Don't you see a ray of light behind that hill?” “I see it, Dick.” “Is it the first ray of the morning, or is it just a low star?” “It's the dawn, Dick, and mighty glad I am to see it. Look how fast it comes!” The sun shot up, over the hill. The sky turning to silver soon gave way to gold, and the clear August light poured in a flood over the rolling country. Dick saw ahead of him a vast cloud of dust extending miles from east to west, marking where the army of Pope pushed on its retreat to the Rappahannock. There was no need to search for the Northern force. The newest recruit would know that it was here. The Southern vanguard was behind them and not many hundred yards away. Dick distinctly saw the cavalry, riding along the road, and hundreds of skirmishers pushing through the woods and fields. He judged that the force did not number many thousands and that it could not think of assailing the whole Union army. But with the coming of day the vigor of the attack increased. The skirmishers fired from the shelter of every tree stump, fence or hillock and the bullets pattered about Dick and his comrades.