The Armies at Gettysburg > The Army of the Potomac


Organization of the 3rd Corps of the Federal Army of the Potomac during the Civil War Battle of Gettysburg, July 1-3, 1863. The 3rd Corps had 38 infantry regiments and 5 artillery batteries at the Battle of Gettysburg organized into 2 divisions of three brigades each and an artillery brigade.

3rd Corps (monument)
Major General Daniel E. Sickles (wounded July 2) (monument)
Major General David B. Birneystrength: 13,000 men, 30 guns
casualties: 590 killed, 3,030 wounded, 590 missing, 4,210 total

Headquarters escort
6th New York Cavalry, Company A



1st Division (monument)
Major General David B. Birney
strength: 5,100 men
casualties: 270 killed, 1,385 wounded, 355 missing, 2,010 total


First Brigade (monument)
Brigadier General Charles K. Graham (wounded and captured July 2)
Colonel Andrew H. Tippin
Colonel Henry J. Madill
strength: 1,515 men
casualties: 65 killed, 510 wounded, 165 missing, 740 total

57th Pennsylvania Infantry Regiment (8 companies) (monument)
Colonel Peter Sides (wounded July 2)
Major William B. Neeper (wounded July 2)
Captain Alanson H. Nelson (wounded July 2)

63rd Pennsylvania Infantry Regiment (monument)
Major John A. Danks

68th Pennsylvania Infantry Regiment (monument)
Colonel Andrew H. Tippin (^ July 2)

105th Pennsylvania Infantry Regiment (monument)
Colonel Calvin A. Craig

114th Pennsylvania Infantry Regiment (monument)
Lieutenant Colonel Frederick F. Cavada (captured July 2)
Captain Edward R. Bowen

141st Pennsylvania Infantry Regiment (monument)
Colonel John Henry Madill (^ July 3)


Second Brigade (monument)
Brigadier General J.H. Hobart Ward (^ July 2)
Colonel Hiram Burdan
strength: 2,190 men
casualties:130 killed, 480 wounded, 170 missing, 780 total

20th Indiana Infantry Regiment (monument)
Colonel John Wheeler (killed July 2)
Lieutenant Colonel William C.L. Taylor

3rd Maine Infantry Regiment (monument)
Colonel Moses B. Lakeman

4th Maine Infantry Regiment (monument)
Colonel Elijah Walker (wounded July 2)
Captain Irwin Libby

86th New York Infantry Regiment (monument)
Lieutenant Colonel Benjamin L. Higgins (wounded July 2)
Major Jacob A. Lansing

124th New York Infantry Regiment (monument)
Colonel Augustis H. Van Ellis (killed July 2)
Lieutenant Colonel Francis M. Cumming (wounded July 2)
Major James Cromwell (wounded July 2)
Captain Charles Weygant

99th Pennsylvania Infantry Regiment (monument)
Major John W. Moore

1st United States Sharpshooters
Colonel Hiram Berdan (^ July 2)
Lieutenant Colonel Caspar Trepp

2nd United States Sharpshooters (8 companies)
Major Homer R. Stoughton


Third Brigade (monument)
Colonel Philippe Régis Denis de Keredern de Trobriand
strength: 2,010 men
casualties:75 killed, 395 wounded, 20 missing, 490 total

17th Maine Infantry Regiment (monument)
Lieutenant Colonel Charles B. Merrill

3rd Michigan Infantry Regiment (monument)
Colonel Byron R. Pierce (wounded July 2)
Lieutenant Colonel Edwin S. Pierce

5th Michigan Infantry Regiment (monument)
Lieutenant Colonel John Pulford (wounded July 2)
Major Salmon S. Mathhews (wounded July 2)
1st Lietenant Charles T. Bissel

40th New York Infantry Regiment (monument)
Colonel Thomas W. Egan

110th Pennsylvania Infantry Regiment (monument)
Lieutenant Colonel David M. Jones (wounded July 2)
Major Isaac Rogers



2nd Division (monument)
Major General Andrew A. Humphreys (monument)
strength: 4,925 men
casualties: 315 killed, 1,560 wounded, 215 missing, 2,090 total


1st Brigade(monument)
Brigadier General Joseph B. Carr
strength: 1,720 men
casualties: 120 killed, 605 wounded, 65 missing, 790 total

1st Massachusetts Infantry Regiment (monument)
Lieutenant Colonel Clark B. Baldwin (wounded July 2)

11th Massachusetts  Infantry Regiment (monument)
Lieutenant Colonel Porter D. Tripp

16th Massachusetts  Infantry Regiment (monument)
Lieutenant Colonel Waldo Merriam (wounded July 2)
Captain matthew Donovan

12th New Hampshire  Infantry Regiment (monument)
Captain John F. Langley (wounded July 2)
Captain Asa W. Bartlett

11th New Jersey  Infantry Regiment (monument)
Colonel Robert McAllister (wounded July 2)
Major Philip J. Kearny (mortally wounded (July 2)
Captain Luther Martin (killed July 2)
Captain Andrew H. Ackerman (killed July 2)
Captain William H. Lloyd (wounded July 2)
1st Lieutenant John Schoonover (wounded July 2)
Captain Samuel T. Sleeper

26th Pennsylvania Infantry Regiment (monument)
Major Robert L. Bodine (wounded July 2)

84th Pennsylvania  Infantry Regiment (detached guarding trains) (monument)
Lieutenant Colonel Milton Opp


2nd “Excelsior” Brigade (monument) Colonel William R. Brewster
strength: 1,450 men
casualties: 130 killed, 575 wounded, 75 missing, 780 total

70th New York  Infantry Regiment (monument)
Colonel John E. Farnum

71st New York  Infantry Regiment(monument)
Colonel Henry L. Potter

72nd New York  Infantry Regiment(monument)
Colonel John S. Austin (wounded July 2)
Lieutenant Colonel John Leonard

73rd New York  Infantry Regiment(monument)
Major Michael W. Burns

74th New York  Infantry Regiment(monument)
Lieutenant Colonel Thomas Holt

120th New York  Infantry Regiment (monument)
Lieutenant Colonel Cornelius D. Westbrook (wounded July 2)
Major John R. Tappen


3rd Brigade (monument) Colonel George C. Burling
strength: 1,365 men (2 regiments guarding trains)
casualties: 60 killed, 375 wounded, 80 missing, 515 total

2nd New Hampshire Infantry Regiment (monument)
Colonel Edward L. Bailey (wounded July 2)
5th New Jersey Infantry Regiment

5th New Jersey Infantry Regiment (monument)
Colonel Colonel William J. Sewell (wounded July 2)
Captain Henry H. Woolsey (wounded July 2)

6th New Jersey Infantry Regiment (monument)
Lieutenant Colonel Stephen R. Gilkyson

7th New Jersey Infantry Regiment (monument)
Colonel Louis Raymond Francine (mortally wounded July 2)
Lieutenant Colonel Francis Price (wounded July 2)
Major Frederick Cooper

8th New Jersey Infantry Regiment (monument)
Colonel John Ramsey (wounded July 2)
Captain John G. Langston

115th Pennsylvania Infantry Regiment (monument)
Major John P. Dunne



Artillery Brigade (monument)
Captain George E. Randolph (wounded July 2)
Captain A. Judson Clark
strength: 600 men, 30 guns
casualties: 8 killed, 81 wounded, 17 missing, 106 total

1st New Jersey Artillery, Battery B (monument)
Captain A. Judson Clark (^ July 2)
Lieutenant Robert Sims
6 10-pounder Parrott Rifles

1st New York Artillery Battery D (monument)
Captain George B. Winslow
6 Napoleons

4th New York Independent Battery (monument)
Captain James E. Smith
6 10-pounder Parrott Rifles

Rhode Island Battery E (monument)
Lieutenant John K. Bucklyn (wounded July 2)
Lieutenant Benjamin Freeborn (wounded)
6 Napoleons

4th United States Artillery, Battery K (monument)
1st Lieutenant Francis Webb Seeley (wounded July 2)
2nd Lieutenant Robert James
6 Napoleons