Greg --

The Official Records include this skirmish under the heading, JUNE 29, 1863.--Skirmish near Lexington, Tenn.

Doesn't sound as if things went very well:

On June 29, a.m., a force under command of Lieutenant-Colonel von Helmrich, Fourth Missouri Cavalry, consisting of 8 officers and 85 men of the Fourth Missouri Cavalry, and 8 officers and 160 men of the Fifteenth Kentucky Cavalry, under Lieutenant-Colonel Henry, left Spring Creek to scout toward Lexington. When within 6 miles of Lexington, information was gained of a large rebel force in that place, said to be 1,500 strong, and that another force of about 500 men was moving from Jackson to attack us in the rear. Lieutenant-Colonel von Helmrich concluded to fall back to Spring Creek to avoid being cut off. On the march back, we were attacked by a force of about 2,000 rebels at 2 p.m., lying in ambush, who were not discovered until they fired upon our advance guard. Being closely pressed and pursued, and not being able to reach Columbus, an attempt was made to reach Fort Heiman, which was but partially successful.

Here's a follow-up communication:

FORT HEIMAN, July 9, 1863.
Brigadier-General ASBOTH:

Captain Hanson, Fifteenth Kentucky Cavalry, has just returned from a scout 40 miles toward Jackson; learns that on Friday last, 3d instant, a rebel force of 900 were ordered back from Lexington to Jackson, where they joined the main force, 1,500 strong, with seven pieces of light artillery. The whole, commanded by General Stevenson, are intending to move on Columbus. The captain's informant obtained the above information indirectly from rebel soldiers at Lexington. All quiet here. No rebels north of Lexington.

J. F. BLACK, Lieutenant-Colonel, Commanding.