Composition of Waul's Legion at Vicksburg:

1st Infantry Battalion: Maj. Eugene S. Bolling
2nd Infantry Battalion: Lt. Col. James Wrigley
The Zouave Battalion: Capt. J.B. Fleitas
Artillery Battery: Capt. John Q. Wall
Cavalry Detachment: Lt. Thomas J. Cleveland
Attached companies:
Company C, 1st Tennessee Cavalry: Capt. Richard S. Vandyke
Botetourt Virginia Artillery: Capt. John W. Johnston, Lt. Francis G. Obenchain
Signal Corps Detachment: Lt. C.H. Barrott

Source--- Wiki