East of this old town, a small stream, which rises in the center of the Peninsula, runs southeast and empties into College Creek. Very near the head-waters of this stream another has its rise, which runs north to the York River, and is called Queen's Creek. On both streams there are mills. The main road from Yorktown to Williamsburg runs on the high land between the head-waters of the creeks. About a mile east of the town the road forks. General Magruder had thrown up a strong fortification at that point, which contained thirteen guns, and was called Fort Magruder. There were ten other earthworks which effectually commanded the roads, the ravines, and all the approaches from the east. In pursuing Magruder, General Stoneman, with the cavalry and Gibson's battery, went up the Yorktown road, and came out of the dense forest in front of Fort Magruder. The guns opened fire, throwing shells, which killed and wounded several of the cavalrymen. Gibson brought his battery into position and replied. The Sixth United States Cavalry moved on towards the fort, but were met by infantry and cavalry, and were compelled to fall back with the loss of thirty men. Gibson was obliged to move his guns, for the batteries in the fort had the range of his position. The mud was deep, and one of the guns sunk to the axle. The horses tugged and pulled, but they also sunk. Other horses were added, but the ground was marshy, and gun and horses went still deeper. The Rebel gunners saw the confusion, and threw their shells upon the spot. Some burst harmlessly in the air, some fell into the mud, others tore up the ground and covered the artillerymen and teamsters with earth, others burst among the horses and men. The Rebel infantry came down upon the run, and Captain Gibson was obliged to leave. The night came on dark and dismal. The rain fell in torrents. The troops who had been marching all day were drenched. The roads were narrow and muddy. There was a want of arrangement in the order of marching, and the divisions became confused. Wagons broke down, artillery sunk in the mire; but the troops were eager to get at the enemy, who had eluded their commander, first at Manassas, and now at Yorktown. They marched, some of them, till midnight, and then, without kindling a fire, lay down drenched, upon the dead forest leaves, having had no dinner, and without a supper. The rain-drops dripped from the trees through the night, but the soldiers were in line at daybreak, ready to move again in pursuit of the enemy. General Hooker being in advance upon the Lee's Mills road, came upon the enemy's pickets posted along a deep ravine above the mill-pond, on the stream which empties into College Creek. General Smith's division, when the army advanced from Yorktown, was on the Lee's Mills road, but it moved towards the north and came in front of the enemy on the Yorktown road.