I've been researchig the engagement at Triune, TN that took place the following day on 27 Dec. 1862. Here's a paragraph from my "working manuscript," but I don't think it will be very helpful:
"On Friday, 26 December 1862, Brigadier General David S. Stanley, U. S. Army, Chief of Cavalry, Fourteenth Corps, divided his cavalry into three columns, putting one column on the Murfreesboro Pike in advance of General Crittenden's corps, and one column to move on Franklin, dislodge the enemy's cavalry and move parallel to General McCook's corps, protecting his right flank as it moved south on the Nolensville Pike toward Nolensville and Triune. The third column, personally commanded by General Stanley, was the reserve cavalry that consisted '…of the new regiments, viz, Anderson Troops, or Fifteenth Pennsylvania Cavalry, First Middle [5th] Tennessee, Second East Tennessee Cavalry, and four companies of the Third Indiana [Cavalry].' The 1st and 2nd Tennessee and 15th Pennsylvania regiments of General Stanley’s cavalry column preceded General McCook’s corps on the Nolensville Pike, joining him later that day at his camp about 1 mile south of Nolensville."