There was desultory firing all along the line during that memorable afternoon, but during that time our army was finally concentrated, McCook, with his three divisions on the right, Thomas, with his three in the center, and Crittenden, with his three on the left. The whole line, with the intervals for artillery and cavalry, occupying a distance of two or three miles, more or less. Crittenden's three divisions were formed, two divisions in line of battle, and one in reserve, as follows: Palmer's division on the right, Wood's on the left, and Van Cleve in reserve opposite the interval between Palmer's and Wood's, and each division consisting likewise of three brigades, were formed in like manner, two in line and one in reserve. In Wood's division Wagner's brigade was on the right, my own on the left, and Harker in reserve. This arrangement brought my brigade on the extreme left of the entire army. During that evening we were made acquainted with the plan of the attack which was to be made by our army under cover of the gray of the morning the following day, the memorable 31st day of December, 1862. This was for the left wing (Crittenden's) to cross Stone River--which was at that time fordable at all points for all arms of the service--and deliver a furious attack on the enemy's extreme right, this to be followed up by a wheel to the right by other portions of our army in case Crittenden was successful in his attack, until all portions of our army should become engaged and the battle become general all along the line.