success in this seemed hardly probable. Yet the trains not only reached the bank at the fixed hour, but the engineers, according to orders, began at once unloading the material, and accomplished this without being at all disturbed by the rebels in Fredericksburg until daybreak. Their guards, reliefs, and main bodies must all have slept very soundly, or they would surely have tried some rifle practice, even in the dark. I did not see the creditable night performance of the pontoniers myself, having sought a good night's rest after the artillery had got into position, in view of the fatiguing labors I looked for on the next day. I slept so well that I was not roused by the musketry and artillery fire to which the bridge-throwing led, between six and seven o'clock, and did not stir till called for breakfast at seven. I dressed and ate very hurriedly amidst the roar of artillery, but it was nearly eight o'clock before I got to the line of our fighting batteries.
I quickly learned that the fire had no other object than to cover the completion of the bridges. The pontoons for those at the upper and lower ends of the town not only had been pushed into the water without interference from the enemy, but were half way across when, shortly after six, the bridge-builders received a sharp musketry fire from the other side which compelled them to abandon their work, after having some officers and a number of non-commissioned officers and privates killed and wounded. The infantry supports fired in return, but effected nothing. Thereupon, four batteries on the bluffs above opened a violent fire, with shot and shell from twenty-four guns, upon the other bank, for about fifteen minutes. When they ceased, the engineers tried to resume their work, but were pelted again with rebel bullets. As a thick fog hung over the river, obliging the batteries to fire at random, six light batteries were ordered down to the river bank; four near the upper and two near the middle bridge. The fire from the batteries above and below was then kept up at intervals, and was going on when I reached the scene.