I think I found the 7th Tennessee Calvary here. Love to learn more about unit.
George Washington Reed, Civil War Veteran (USA) (POW)
https://en.m.wikipedia.org/wiki/7th_Tennessee_Cavalry_Regiment_(Union)
https://www.findagrave.com/memorial/51142475/george-washington-reed
Billie
Apparently per George Washington Reeds Findagrave his brother John C Reed also Served and died at Andersonville
Found both on registry https://tngenweb.org/henderson/2013/09/11/roster-7-cavalry/