These two men from the 13th Indiana Cavalry pose for their picture in Huntsville, Alabama in July 1864. The two soldiers are Albert D. Patrick (Co H) and John H. Daily (Co D), both privates in the 13th Indiana Cav. The original image sold on eBay.
The 13th Indiana Cav fought at Franklin and Nashville, and were involved in the Union chasing after Hood in his retreat to Alabama after Nashville.
Here’s a separate image of Daily.
And a separate image of Patrick.