R.L. Williams does have cards in his record showing service in Bradford's Battalion (13/14th)Co. E & the 6th TN. Cav Co. E. If I remember correctly, the dates are somewhat confusing as to when he was transfered and or served from one unit to the other.
His pension records state he was also a prisoner at Florence (SC ?)if that's possible, "During the Fall & Winter of 1864-1865".
I believe he served with a Green family cousin, Alexander.
D.W.