This could possibly be your man. I believe Forsyth is about 30 miles from Fort Valley.

William Walker, Private, Company K, Doyal’s Regiment, Georgia Infantry,* volunteered May 6, 1862 at Forsyth, Monroe County, Georgia by Capt. J. M. Ponder, under remarks of May 21, 1862 Pay Roll: “Name will not appear again of not having been mustered into service and has received no Bounty, no further records

Note, his name does not appear on any subsequent Company muster rolls

* This company subsequently became Company K, 53rd Regiment Georgia Infantry

Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Georgia