United States Army > Army of the Potomac


< to February • March 1864 • to April >

Commanded by:
Major General Gouverneur Warren (to 3/24)
Major General Winfield S. Hancock

The Third Corps was broken up and its Second Division became the Fourth Division, Third Corps.

First Division

Brigadier General John C. Caldwell
First Brigade Colonel H. B. McKean (to 3/14)
Lieutenant Colonel Knut O. Broady (to 3/25)
Colonel Nelson A. Miles
26th Michigan Infantry Regiment Colonel Judson S. Farrar (res. 3/29)
Major Lemuel Saviers
61st New York Infantry Regiment Lieutenant Colonel Knut Oscar Broady (^ 3/14)
81st Pennsylvania Infantry Regiment
140th Pennsylvania Infantry Regiment Lieutenant Colonel John Fraser
Second (Irish) Brigade Major A.J. Lawler (to 3/25)
Colonel T. A. Smythe
28th Massachusetts Infantry Regiment
63rd New York Infantry Regiment Captain Thomas Touhy
69th New York Infantry Regiment Captain Richard Moroney
88th New York Infantry Regiment Captain Denis F. Burke
116th Pennsylvania Infantry Regiment Captain Seneca G. Willauer
Third Brigade Colonel Paul Frank (to 3/20)
Colonel A. Funk (to 3/25)
Colonel Paul Frank
39th New York Infantry Regiment Colonel Augustus Funk from 3rd Div., 3rd. Brig.
52nd New York Infantry Regiment Captain William Scherrer
57th New York Infantry Regiment Lieutenant Colonel Alford B. Chapman
66th New York Infantry Regiment Major Peter A. Nelson to 4th Brig. (below)
111th New York Infantry Regiment from 3rd Div., 3rd. Brig.
125th New York Infantry Regiment from 3rd Div., 3rd. Brig.
126th New York Infantry Regiment from 3rd Div., 3rd. Brig.
148th Pennsylvania Infantry Regiment Colonel James A. Beaver to 4th Brig. (below)
Fourth Brigade Colonel John R. Brooke
2nd Delaware Infantry Regiment Lieutenant Colonel David L. Stricker
64th New York Infantry Regiment Major Leman W. Bradley
66th New York Infantry Regiment Major Peter A. Nelson
from 3rd Brig. (above)
53rd Pennsylvania Infantry Regiment Captain Henry S. Dimm
145th Pennsylvania Infantry Regiment Colonel Hiram L. Brown
148th Pennsylvania Infantry Regiment Colonel James A. Beaver from 3rd Brig. (above)

Second Division

Major General John Gibbon
First Brigade Colonel Selden Connor (to 3/25)
Brigadier General Alexander Webb
19th Maine Infantry Regiment Lieutenant Colonel Henry W. Cunningham
19th Massachusetts Infantry Regiment Lieutenant Colonel Ansel D. Wass from 3 Brig. (below)
20th Massachusetts Infantry Regiment Captain Henry L. Abbott from 3 Brig. (below)
7th Michigan Infantry Regiment Major Sylvanua W. Curtis from 3 Brig. (below)
15th Massachusetts Infantry Regiment Major I. Harris Hooper
1st Minnesota Infantry Regiment Major Mark W. Downie
42nd New York Infantry Regiment Captain Robert C. Wright from 3 Brig. (below)
59th New York Infantry Regiment Captain Horace P. Rugg from 3 Brig. (below)
2nd New York State Militia Major Thomas W. Baird
152nd New York Infantry Regiment Colonel Alonzo Ferguson to 2 Brig. (below)
Second Brigade Colonel R. P. Smith (to 3/18)
Colonel C. Kockersperger (to 3/26)
Colonel T. G. Morehead
152nd New York Infantry Regiment Colonel Alonzo Ferguson from 1 Brig. (above)
69th Pennsylvania Infantry Regiment Major James Duffie
71st Pennsylvania Infantry Regiment Colonel Richard P. Smith
72nd Pennsylvania Infantry Regiment Lieutenant Colonel Theodore Heiser
106th Pennsylvania Infantry Regiment Lieutenant Colonel William L. Curry
Third Brigade Colonel T. G. Morehead (to 3/25)
Colonel Samuel S. Carroll
14th Connecticut Infantry Regiment Colonel Theodore G. Ellis from 3 Div. 2 Brig.
1st Delaware Infantry Regiment Lieutenant Colonel Edward P. Harris from 3 Div. 2 Brig.
14th Indiana Infantry Regiment Colonel John Coons from 3 Div. 1 Brig.
19th Massachusetts Infantry Regiment Lieutenant Colonel Ansel D. Wass to 1 Brig. (above)
20th Massachusetts Infantry Regiment Captain Henry L. Abbott to 1 Brig. (above)
7th Michigan Infantry Regiment Major Sylvanua W. Curtis to 1 Brig. (above)
12th New Jersey Infantry Regiment Colonel J. Howard Willets from 3 Div. 2 Brig.
10th New York Infantry Regiment Major George F Hopper from 3 Div. 2 Brig.
108th New York Infantry Regiment Colonel Charles J. Powers (^ 12/28) from 3 Div. 2 Brig.
42nd New York Infantry Regiment Captain Robert C. Wright to 1 Brig. (above)
59th New York Infantry Regiment Captain Horace P. Rugg to 1 Brig. (above)
4th Ohio Infantry Regiment Major Gordon A. Stewart from 3 Div. 1 Brig.
8th Ohio Infantry Regiment Lieutenant Colonel Franklin Sawyer from 3 Div. 1 Brig.
7th West Virginia Infantry Regiment Lieutenant Colonel Jonathan H. Lockwood from 3 Div. 1 Brig.

Third Division

Brigadier General Joshua T. Owen (to 3/25)
Major General David B. Birney
First Brigade (to 3/24) Colonel S. S. Carroll
14th Indiana Infantry Regiment Colonel John Coons to 3 Brig. 2 Div.
3/24.
4th Ohio Infantry Regiment Major Gordon A. Stewart
8th Ohio Infantry Regiment Lieutenant Colonel Franklin Sawyer
7th West Virginia Infantry Regiment Lieutenant Colonel Jonathan H. Lockwood
First Brigade after 3/24 Colonel Thomas W. Egan
20th Indiana Infantry Regiment Lieutenant Colonel C. L. Taylor from 2 Brig, 1 Div. 3 Corps
3rd Maine Infantry Regiment Colonel Moses B. Lakeman from 2 Brig, 1 Div. 3 Corps
40th New York Infantry Regiment Colonel Thomas W. Egan (to 3/24)
Lieutenant Colonel Augustus Warner
from 3 Brig, 1 Div. 3 Corps
86th New York Infantry Regiment Colonel Jacob H. Lansing from 3 Brig, 1 Div. 3 Corps
124th New York Infantry Regiment Lieutenant Colonel Francis M. Cummings from 2 Brig, 1 Div. 3 Corps
99th Pennsylvania Infantry Regiment Colonel Asher S. Leidy from 2 Brig, 1 Div. 3 Corps
110th Pennsylvania Infantry Regiment Major Isaac Rogers from 3 Brig, 1 Div. 3 Corps
141st Pennsylvania Infantry Regiment Major Isaac Rogers from 3 Brig, 1 Div. 3 Corps
2nd United States Sharpshooters Major Homer R. Stoughton from 2 Brig, 1 Div. 3 Corps
Second Brigade (to 3/25) Colonel T. A. Smythe
14th Connecticut Infantry Regiment Colonel Theodore G. Ellis to 3 Brig. 2 Div. 
3/25
1st Delaware Infantry Regiment Lieutenant Colonel Edward P. Harris
12th New Jersey Infantry Regiment Colonel J. Howard Willets
10th New York Infantry Regiment Lieutenant Colonel George F Hopper
108th New York Infantry Regiment Colonel Charles J. Powers
Second Brigade (after 3/25) Brigadier General Alexander Hays
4th Maine Infantry Regiment Captain Edwin Libby
17th Maine Infantry Regiment Lieutenant Colonel Charles B. Merrill
3rd Michigan Infantry Regiment Lieutenant Colonel Edwin S. Pierce
5th Michigan Infantry Regiment
93rd New York Infantry Regiment Colonel John S. Crocker
57th Pennsylvania Infantry Regiment Colonel Peter Sides
63rd Pennsylvania Infantry Regiment Lieutenant Colonel John A. Danks
105th Pennsylvania Infantry Regiment Colonel Calvin A. Craig
1st United States Sharpshooters Colonel Hiram Berdan
Third Brigade Colonel Augustus Funk
discontinued 3/25
39th New York Infantry Regiment Major Hugo Hildebrandt transferred to
3 Brig. 1 Div.
3/25
111th New York Infantry Regiment Colonel Clinton D. McDougall
125th New York Infantry Regiment Colonel Levin Crandell
126th New York Infantry Regiment Colonel James M. Bull

Fourth Division

Brigadier General John B. Carr
First Brigade Brigadier General Gershom Mott
1st Massachusetts Infantry Regiment from 3 Corps, 2 Div., 1 Brig.
16th Massachusetts Infantry Regiment from 3 Corps, 2 Div., 1 Brig.
5th New Jersey Infantry Regiment from 3 Corps, 2 Div., 3 Brig.
6th New Jersey Infantry Regiment from 3 Corps, 2 Div., 3 Brig.
7th New Jersey Infantry Regiment from 3 Corps, 2 Div., 3 Brig.
8th New Jersey Infantry Regiment from 3 Corps, 2 Div., 3 Brig.
11th New Jersey Infantry Regiment from 3 Corps, 2 Div., 1 Brig.
26th Pennsylvania Infantry Regiment from 3 Corps, 2 Div., 1 Brig.
115th Pennsylvania Infantry Regiment from 3 Corps, 2 Div., 3 Brig.

Second Brigade

Colonel William R. Brewster
11th Massachusetts Infantry Regiment from 3 Corps, 2 Div., 1 Brig.
70th New York Infantry Regiment from 3 Corps, 2 Div., 2 Brig.
71st New York Infantry Regiment from 3 Corps, 2 Div., 2 Brig.
72nd New York Infantry Regiment from 3 Corps, 2 Div., 2 Brig.
73rd New York Infantry Regiment from 3 Corps, 2 Div., 2 Brig.
74th New York Infantry Regiment from 3 Corps, 2 Div., 2 Brig.
120th New York Infantry Regiment from 3 Corps, 2 Div., 2 Brig.
84th Pennsylvania Infantry Regiment from 3 Corps, 2 Div., 1 Brig.

Corps Artillery Brigade

Colonel John C. Tidball 
10th Massachusetts Battery Captain J. Henry Sleeper from 3rd Corps Artilllery
1st New Hampshire Battery Captain Frederick M. Edgell from 3rd Corps Artilllery
1st New York Artillery, Battery G Captain Nelson Ames
1st Pennsylvania Artillery, Battery F Captain Bruce Ricketts
1st Pennsylvania Artillery, Battery G to Camp Berry, Washington
Pennsylvania Independent Battery C&F Captain James Thompson to Camp Berry, Washington
1st Rhode Island Artillery, Battery A Captain William A. Arnold
1st Rhode Island Artillery, Battery B Lieutenant Fred T. Brown
4th United States Artillery, Battery K Lieutenant John W. Roder
5th United States Artillery, Batteries C&K Lieutenant James Gilliss from 3rd Corps Artilllery