United States Army > Army of the Potomac


< to June • July 1863 • to August >

Commanded by:
Major General Henry W. Slocum (wing commander July 1-4)
Brigadier General Alpheus Williams
(to 7/4)

Headquarters
10th Maine Battalion Captain John D. Beardsley

First Division

Brigadier General Alpheus S. Williams (7/1)
Brigadier General Thomas H. Ruger
(to 7/4)
Brigadier General Alpheus S. Williams 

First Brigade

Colonel Archibald L. McDougall (to 7/26)
Brigadier General Joseph F. Knipe
5th Connecticut Infantry Regiment Colonel Warren W. Packer
20th Connecticut Infantry Regiment Lt. Colonel William B. Wooster
3rd Maine Infantry Regiment Colonel Joseph M. Sudsburg
123rd New York Infantry Regiment Lt. Colonel James C. Rogers (to 7/26)
Colonel Archibald L. McDougall
145th New York Infantry Regiment Colonel E. Livingston Price
46th Pennsylvania Infantry Regiment Colonel James L. Selfridge

Second Brigade

Brigadier General Henry Lockwood reorganized 7/1, discontinued 7/15
1st Maryland Eastern Shore Regiment Colonel James Wallace from 8 Corps, Lockwood’s Brig.; to W. Va., Md. Heights Div., 3 Brig.
1st Maryland Potomac Home Brigade Colonel William P. Maulsby from 8 Corps, Lockwood’s Brig.; to W. Va., Md. Heights Div., 3 Brig.
2nd Maryland Eastern Shore Regiment Colonel Robert S. Rogers from 8 Corps, Lockwood’s Brig.; to W. Va., Md. Heights Div., 3 Brig.
150th New York Infantry Regiment Colonel John H. Ketcham from 8 Corps, Ind. Brig.
to 3 Brig. (below)

Third Brigade

Brigadier General Thomas H. Ruger (^ 7/1)
Colonel Silas Colgrove (to 7/4)
Brigadier General Thomas H. Ruger
27th Indiana Infantry Regiment Colonel Silas Colgrove (^ 7/1)
Lt. Colonel John R. Fesler (to 7/4)
Colonel Silas Colgrove
2nd Massachusetts Infantry Regiment Lt. Colonel Charles R. Mudge (k 7/3)
Major Charles F. Morse
13th New Jersey Infantry Regiment Colonel Ezra A. Carman
107th New York Infantry Regiment Colonel Nirom M. Crane
150th New York Infantry Regiment Colonel John H. Ketcham from 2 Brig. (above)
3rd Wisconsin Infantry Regiment Colonel William Hawley

Second Division

Brigadier General John W. Geary

First Brigade

Colonel Charles Candy
5th Ohio Infantry Regiment Colonel John H. Patrick
7th Ohio Infantry Regiment Colonel William R. Creighton
29th Ohio Infantry Regiment Captain Samuel McClellan
66th Ohio Infantry Regiment Lieutenant Colonel Eugene Powell
28th Pennsylvania Infantry Regiment Captain John Flynn
147th Pennsylvania Infantry Regiment Lieutenant Colonel Ario Pardee

Second Brigade

Colonel George Cobham
Brigadier General Thomas L. Kane (7/2*)
29th Pensylvania Infantry Regiment Lieutenant Colonel William Richards, Jr.
109th Pensylvania Infantry Regiment Captain Frederick L. Gimber
111th Pensylvania Infantry Regiment Lieutenant Colonel Thomas M. Walker
177th Pensylvania Infantry Regiment Colonel George Wiestling left 8/1 to muster out in Harrisburg

Third Brigade

Brigadier General George S. Greene
60th New York Infantry Regiment Colonel Abel Godard
78th New York Infantry Regiment Lieutenant Colonel Herbert von Hammerstein
102nd New York Infantry Regiment Captain Lewis R. Stegman
137th New York Infantry Regiment Colonel David Ireland
149th New York Infantry Regiment Colonel Henry Alanson Barnum

Corps Artillery

1st New York Artillery, Battery M Lieutenant Charles E. Winegar
Pennsylvania Independent Battery E Lieutenant Charles A. Atwell
4th United States Artillery, Battery F 2nd Lieutenant Sylvanus T. Rugg
5th United States Artillery, Battery K 1st Lieutenant David H. Kinzie

*Brigadier General Kane had pneumonia during the Gettysburg Campaign. He left a Baltimore hospital to join his brigade on July 2, too sick to resume full command but able to assist his senior colonel.