Sifakis - Compendium of the Confederate Armies - South Carolina and Georgia - page 190
GA 4th Inf Reg, Reserves organized early 1864 - organization recognized by War Dept 10/25/64 - no records after 10/15/64
FIRST COMMANDER: Richard S. Taylor, Col
FIELD OFFICERS: Joseph H. Burks, Major
Allen D. Chandler, Lt Col
ASSIGNMENT: Andersonville June-Oct 1864
BATTLE: Savannah Campaign Nov-Dec 1864
Roster of Confederate Soldiers, 1861-1865, shows:
Jenkins, Perry GA 4th Res. Co.A
also shows
Jenkins, D.A.J. GA 4th Res. Co.A
Jenkins, L.C. GA 4th Res. Co.K
As for the muster roll, there appears to be over 900 names listed.