Many changes were made in the position of the national forces during Friday night. The Second corps was thrown down the Banks’s Ford road, holding the extreme left of the line, and, with a portion of the Fifth, completed the line on the east up to the plank road supported by the Second division of the third corps (General Sickles) which was resting on the direct road to the United States Ford. The Second division, General Geary’s, of the Twelfth (General Slocum) held the left of the Union centre, its left resting on the plank road in front of the general headquarters, and extending along the entire front of the field. General Williams’ division of the same corps was formed on the right of this line, facing to the southwest, its extreme right resting in the edge of the woods facing a little cleared field, situated about two miles southwest from headquarters. The Eleventh corps (General Howard) was originally directed to take position on the right of General Williams, with its right extending as far down towards the Wilderness road as consistent with a proper strengthening of the position. Birney’s division of the third corps was ordered to take position on the plank road as a reserve both to the Eleventh and Twelfth; but General Sickles, discovering an advantageous opening in a cleared field about a quarter of a mile south of the plank road, and a mile and a half west of general headquarters, obtained permission to advance Birney to this place, which brought him between the Eleventh and Twelfth corps. At this point he deployed off to the right around the field, General Williams occupying the other side in the opening. In the general disposition of the forces for Saturday, both Berry’s and Whipple’s divisions of the Third corps were held in reserve, though Bordan’s sharpshooters were detached from the latter’s division, for special duty with Birney. The First corps (General Sedgwick) had arrived from the left, and were placed on the extreme right, bringing the national lines down in that direction, almost to the Rappahannock river. Nor had the enemy been idle during this time; about midnight it was observed by the advanced pickets of the Third and Twelfth corps, that large masses of the rebels were being moved in front of the Union line, with a view to get a position on the right, and flank it.