Third Corps, Army of the Potomac
Third Army Corps
Maj. Gen. Daniel Sickles
Maj. Gen. David B. Birney

FIRST DIVISION.
Maj. Gen. DAVID B. BIRNEY.
Brig. Gen. J. H. HOBART WARD.
First Brigade.
Brig. Gen. CHARLES K. GRAHAM.
Col. ANDREW H. TIPPIN.
57th Pennsylvania (eight companies):
- Col. Peter Sides.
- Capt. Alanson H. Nelson.
- Maj. John A. Danks.
- Col. Andrew H. Tippin.
- Capt. Milton S. Davis.[?]
- Col. Calvin A. Craig.
- Lieut. Col. Frederick F. Cavada.
- Capt. Edward R. Bowen.
- Col. Henry J. Madill.
Second Brigade.
Brig. Gen. J. H. HOBART WARD.
Col. HIRAM BERDAN.
- Col. John Wheeler.
- Lieut. Col. William C. L. Taylor.
- Col. Moses B. Lakeman.
- Col. Elijah Walker.
- Capt. Edwin Libby.
- Lieut. Col. Benjamin L. Higgins.
- Col. A. Van Horne Ellis.
- Lieut. Col. Francis M. Cummins.
- Maj. John W. Moore.
1st United States Sharpshooters: (A, B, D, H, C, I, K, E, F, G)
- Col. Hiram Berdan.
- Lieut. Col. Casper Trepp.
2d United States Sharpshooters (B, D, E&H, F&G)
- Maj. Homer R. Stoughton.
Third Brigade.
Col. P. REGIS DE TROBRIAND.
- Lieut. Col. Charles B. Merrill.
- Col. Byron R. Pierce.
- Lieut. Col. Edwin S. Pierce.
- Lieut. Col. John Pulford.
- Col. Thomas W. Egan.
110th Pennsylvania (six companies):
- Lieut. Col. David M. Jones.
- Maj. Isaac Rogers.

SECOND DIVISION.
Brig. Gen. ANDREW A. HUMPHREYS.
First Brigade.
Brig. Gen. JOSEPH B. CARR.
- Lieut. Col. Clark B. Baldwin.
- Lieut. Col. Porter D. Tripp.
- Lieut. Col. Waldo Merriam.
- Capt. Matthew Donovan.
- Capt. John F. Langley.
- Col. Robert McAllister.
- Capt. Luther Martin.
- Lieut. John Schoonover.
- Capt. William H. Lloyd.
- Capt. Samuel T. Sleeper.
- Lieut. John Schoonover.
- Maj. Robert L. Bodine.
- Lieut. Col. Milton Opp.
Second Brigade.
Col. WILLIAM R. BREWSTER.
- Col. J. Egbert Farnum.
- Col. Henry L. Potter.
- Col. John S. Austin.
- Lieut. Col. John Leonard.
- Maj. Michael W. Burns.
- Lieut. Col. Thomas Holt.
- Lieut. Col. Cornelius D. Westbrook.
- Maj. John R. Tappen.
Third Brigade.
Col. GEORGE C. BURLING.
- Col. Edward L. Bailey.
- Col. William J. Sewell.
- Capt. Thomas C. Godfrey.
- Capt. Henry H. Woolsey.
- Lieut. Col. Stephen R. Gilkyson.
- Col. Louis R. Francine.
- Maj. Frederick Cooper.
- Col. John Ramsey.
- Capt. John G. Langston.
- Maj. John P. Dunne.
ARTILLERY BRIGADE.
Capt. GEORGE E. RANDOLPH.
Capt. A. JUDSON CLARK.
- Capt. A. Judson Clark.
- Lieut. Robert Sims.
1st New York Light, Battery D,
- Capt. George B. Winslow.
- Capt. James E. Smith.
1st Rhode Island Light, Battery E:
- Lieut. John K. Bucklyn.
- Lieut. Benjamin Freeborn.
- Lieut. Francis W. Seeley.
- Lieut. Robert James.