past five o'clock A. M., the twenty-eight of April, the enemy crossed the Rappahannock in boats near Fredericksburg, and driving off the pickets on the river, proceeded to lay down a pontoon bridge a short distance below the mouth of Deep run. Later in the forenoon another bridge was constructed about a mile below the first. A considerable force crossed on these bridges during the day, and was massed out of view under the high banks of the river. The bridges, as well as the troops, were effectually protected from our artillery by the depth of the river's bed and the narrowness of the stream, while the batteries on the opposite heights completely commanded the wide plain between our lines and the river.
As in the first battle of Fredericksburg, it was thought best to select positions with a view to resist the advance of the enemy, rather than incur the heavy loss that would attend any attempt to prevent his crossing. Our dispositions were accordingly made as on the former occasion. No demonstration was made opposite any other point of our lines at Fredericksburg, and the strength of the force that had crossed, and its apparent indisposition to attack, indicated that the principal effort of the enemy would be made in some other quarter. This impression was confirmed by intelligence received from General Stuart, that a large body of infantry and artillery was passing up the river. During the forenoon of the twenty-ninth that officer reported that the enemy had crossed in force near Kelly's ford on the preceding evening. Later in the day he announced that a heavy column was moving from Kelly's towards Germana Ford on the Rapidan, and another towards Ely's ford on that river. The routes they were pursuing, after crossing the Rapidan, converge near Chancellorsville, whence several roads lead to the rear of our position at Fredericksburg.
On the night of the twenty-ninth General Anderson was directed to proceed towards Chancellorsville and dispose Wright's brigade and the troops from the Bark Mill ford to cover these roads. Arriving at Chancellorsville about midnight, he found the commands of Generals Mahone and Posey already there, having been withdrawn from the Bark Mill ford, with the exception of a small guard. Learning that the enemy had crossed the Rapidan, and were approaching in strong force, General Anderson retired early on the morning of the thirtieth to the intersection of the Mine and plank roads near Tabernacle church, and began to intrench himself. The enemy's cavalry skirmished with his rear guard as he left Chancellorsville; but being vigorously repulsed by Mahone's
