Six o’Clock, P. M., December 16, 1862. }

Major-General Halleck: The army was withdrawn to this side of the river because I felt the position in front could not be carried, and it was a military necessity either to attack or retire. A repulse would have been disastrous to us. The army was withdrawn at night, without the knowledge of the enemy, and without loss either of property or men.

A. E. BURNSIDE,

Major-General Commanding.

The Federal loss was as follows: General Sumner’s division on the right, killed, four hundred and seventy-three; wounded, four thousand and ninety; missing, seven hundred and forty-eight. Total, five thousand three hundred and eleven.

General Hooker’s division on the centre, killed, three hundred and twenty-six; wounded, two thousand four hundred and sixty-eight; missing, seven hundred and fifty-four. Total, three thousand five hundred and forty-eight.

General Franklin’s division on the left, killed, three hundred and thirty-nine; wounded, two thousand five hundred and forty-seven; missing, five hundred and seventy-six. Total, three thousand four hundred and sixty-two. Grand total, killed, one thousand one hundred and thirty-eight; wounded, nine thousand one hundred and five; missing, two thousand and seventy-eight. Total, twelve thousand three hundred and twenty-one.

The Confederate loss was comparatively small, having been sheltered by their works.

General Burnside in his report to the general-in-chief, thus explains his defeat:

“How near we came to the accomplishment of our object future reports will show. But for the fog, and the unexpected and unavoidable delay in building the bridges, which gave the enemy twenty-four hours to concentrate his forces in his strong position, we would almost certainly have succeeded, in which case the battle would have been, in my opinion, far more decisive than if we had crossed at the places first selected. As it was, we came very near success. Failing in the accomplishment of the main object, we remained in order of battle two days, long enough to decide that the enemy would not come out of his strongholds to fight me with his infantry, after which we recrossed to this side of the river unmolested, without the loss of men or property.