From the time that the first troops appeared in front of Fredericksburgh, nearly three weeks were spent in waiting for pontoons; while General Lee had abundant time to bring together all his forces and post them in such positions, as to dispute our passage at any point, for twenty miles up and down the river. In guarding this extensive front, General Lee had stretched out his army to such an extent, that Burnside hoped, by throwing his whole army across at one point, to pierce the weak line before his enemy could concentrate his forces.
On the morning of the 11th of December, we marched to a point about two miles below Fredericksburgh. The whole army was in motion. The ground had become hardened by frost, and a light coating of snow lay upon it. The wheels no longer sunk in the mire; but artillery rolled easily over the frozen ground.
The Right grand division, Sumner's, had already taken its position immediately in front and above the city of Fredericksburgh; the Center, Hooker's, and the Left division, Franklin's, now took position below the town.
As we descended from the heights of Stafford, into the valley of the Rappahannock, dense clouds of fog obscured the view of the opposite bank, and it was only at noon that we could distinguish objects on the farther side of the river. Engineers were hard at work laying pontoon bridges, being submitted to a brisk musketry fire from the rebel skirmishers, who at times charged upon them, killing and wounding several of the workmen, and greatly hindering the work. A few volleys from our batteries, which were brought forward presently, put these troublesome parties to flight, and the work went on. Still, during all the day, the enemy strove with artillery and infantry to prevent the laying of the bridge, but to no avail.
On the right, where the veteran Sumner commanded, the task of throwing the bridges across, was far more difficult than at the lower crossing. In the storehouses and dwellings along the banks of the river, swarms of rebel soldiers were concealed; and these, by pouring murderous volleys into the midst of the pontoniers, compelled them to desist from the attempt to finish their bridge. Determined no longer to be thwarted by these concealed foes, General Burnside, having previously notified the civil authorities of the town, that if the houses were used as covers for men who were shooting our soldiers, the town must suffer the consequences, ordered our batteries to concentrate their fire upon it and batter down the walls. Soon after noon, the bombardment commenced. One hundred and seventy cannon belched forth the huge iron missiles upon the devoted city. The roar of the artillery was terrific, and as the winds rolled away the huge columns of smoke, we saw that the city was on fire, the flames leaping to the skies. The spectacle was one of awful grandeur. The bursting bombs, shooting forth their flashing coruscations from the columns of smoke, the great tongues of flame from the burning buildings, leaping to the heavens, the clamor of the bursting shells and the shock of the artillery which shook the earth, made up one of the most terribly magnificent of scenes.