Battery C, 32d Massachusetts.
DETACHMENTS AT HEADQUARTERS ARMY OF THE POTOMAC.
_Command of the Provost-Marshal-General_ .-- Brigadier-General M.B.PATRICK 93d New York* 8th United States* 1st Massachusetts Cavalry 2d Pennsylvania Cavalry Batteries E and I, 6th Pennsylvania Cavalry Detachment Regular Cavalry United States Engineer Battalion,* Captain Geo.

H.Mendel, United States Engineers [* Not engaged.] _Guards and Orderlies_ .-- Captain D.P.

MANN Independent Company Oneida Cavalry.
APPENDIX B.
_Organization of the Army of Northern Virginia, June 1, 1863._ GENERAL ROBERT E.LEE _STAFF._ COLONEL W.H.TAYLOR, Adjutant-General.
" C.S.VENABLE, A.D.C.
" CHARLES MARSHALL, A.D.C.
" JAMES L.CORLEY, Chief Quartermaster.
" R.G.COLE, Chief Commissary.
" B.G.BALDWIN, Chief of Ordnance.
" H.L.PEYTON, Assistant Inspector-General.
GENERAL W.N.PENDLETON, Chief of Artillery.
DOCTOR L.GUILD, Medical Director.
COLONEL W.PROCTOR SMITH, Chief Engineer.
MAJOR H.E.YOUNG, Assistant Adjutant-General.
" G.B.COOK, Assistant Inspector-General.
FIRST CORPS.
LIEUTENANT-GENERAL JAMES LONGSTREET McLAWS' DIVISION.
MAJOR-GENERAL L.McLAWS _Kershaw's Brigade_ .-- Brigadier-General J.B.KERSHAW 15th South Carolina, Colonel W.D.De Sausssure 8th South Carolina, Colonel J.W.

Mamminger 2d South Carolina, Colonel John D.Kennedy 3d South Carolina, Colonel James D.Nance 7th South Carolina, Colonel D.Wyatt Aiken 3d (James') Battalion South Carolina Infantry, Lieut.-Colonel R.C.Rice.
_Benning's Brigade_ .-- Brigadier-General H.L.

BENNING 50th Georgia, Colonel W.R.Manning 51st Georgia, Colonel W.M.Slaughter 53d Georgia, Colonel James P.Somms 10th Georgia, Lieut.-Colonel John B.Weems _Barksdale's Brigade_ .-- Brigadier-General WM.