The Armies at Gettysburg > The Army of the Potomac
Organization of the 1st Corps of the Army of the Potomac at Gettysburg
The 1st Corps had 34 infantry regiments and 5 artillery batteries. The infantry was organized into 3 divisions of either two or three brigades. The five artillery batteries were organized in an artillery brigade.
At the beginning of the battle General Reynolds had been given temporary command of the left wing of the army, which included the the 1st as well as the 3rd and 11th Corps. General Doubleday as senior division commander took temporary command of 1st Corps. After Reynolds was killed on July 1 Doubleday continued to command the 1st Corps. When General Meade arrived on the field early on July 2 he transferred General Newton to command the 1st Corps. This returned Doubleday to division command – and earned Meade his undying hatred.
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The 1st Corps flag is a blue swallowtail with the corps number in red.
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1st Corps (monument)
Major General John F. Reynolds (killed July 1) (monument)
Major General Abner Doubleday (relieved July 2) (monument)
Major General John Newton (after July 2)
strength: 12,220 men, 28 guns
casualties: 665 killed, 3,230 wounded, 2,160 missing, 6,055 total
1st Maine Cavalry, Company L
Captain Constantine Taylor
1st Division (monument)
Brigadier General James S. Wadsworth (monument)
strength: 3,860 men
casualties: 300 killed, 1,230 wounded, 625 missing, 2,155 total
1st Brigade “Iron Brigade” (monument)
Brigadier General Solomon Meredith (wounded July 1)
Colonel William Robinson
strength: 1,830 men
casualties: 170 killed, 720 wounded, 260 missing, 1,150 total
19th Indiana Infantry Regiment (monument)(unit history)
Colonel Samuel J. Williams (wounded July 1)
Lieutenant Colonel William W. Dudley (wounded and captured July 1)
Major John M. Lindley (wounded July 1)
24th Michigan Infantry Regiment (monument)(unit history)
Colonel Henry A. Morrow (wounded July 1)
Lieutenant Colonel Mark Flanigan (wounded July 1)
Major Edwin B. Wight (wounded July 1)
Captain Albert M. Edwards
2nd Wisconsin Infantry Regiment (monument)(unit history)
Colonel Lucius Fairchild (wounded and captured July 1)
Lieutenant Colonel George H. Stevens (mortally wounded July 1)
Major John Mansfield (wounded July 1)
Captain George H. Otis
6th Wisconsin Infantry Regiment (monument)(unit history)
Ltieutenant Colonel Rufus Dawes
7th Wisconsin Infantry Regiment (monument)(unit history)
Colonel William W. Robinson (^ July 1)
Lieutenant Colonel John B. Callis (wounded and captured July 1)
Major Mark Finnicum (wounded July 1)
2nd Brigade (monument)
Brigadier General Lysander Cutler
7th Indiana Infantry Regiment (monument)(unit history)
Colonel Ira G. Grover
76th New York Infantry Regiment (monument)(unit history)
Major Andrew J. Grover (killed July 1)
Captain john E. Cook
84th New York Infantry Regiment (14th New York State Militia) (monument)(unit history)
Colonel Edward B. Fowler
95th New York Infantry Regiment (monument)(unit history)
Colonel George H. Biddle (wounded July 1)
Major Edward Pye
147th New York Infantry Regiment (monument)(unit history)
Lieutenant Colonel Francis C. Miller (wounded July 1)
Major George Harney
56th Pennsylvania infantry Regiment (9 companies: A-D & F-K) (monument)(unit history)
Colonel John W. Hofmann
2nd Division (monument)
Brigadier General John C. Robinson
strength: 3,000 men
casualties: 90 killed, 615 wounded, 985 missing, 1,690 total
1st Brigade (monument)
Brigadier General Gabriel R. Paul (wounded July 1)
Colonel Samuel H. Leonard (wounded July 1)
Colonel Adrian R. Root (wounded and captured July 1)
Colonel Richard Coulter (wounded July 1)
Colonel Peter Lyle (temporarily transferred from 2nd Brigade)
strength: 1,540 men
casualties: 50 killed, 340 wounded, 635 missing, 1,025 total
16th Maine Infantry Regiment (monument)(unit history)
Colonel Charles W. Tilton (wounded July 1)
Lt. Colonel Augustus B. Farnham
13th Massachusetts Infantry Regiment (monument)(unit history)
Colonel Samuel H. Leonard (^ July 1)
Lt. Colonel Nathaniel W. Batchelder
94th New York Infantry Regiment (monument)(unit history)
Colonel Adrian R. Root (^ July 1)
Major Samuel A. Moffett
104th New York Infantry Regiment (monument)(unit history)
Colonel Gilbert G. Prey
11th Pennsylvania Infantry Regiment (monument)(unit history)
(transferred from 2nd Brigade July 1)
Colonel Richard Coulter (^ July 1)
Captain Jacob J. Bierer
107th Pennsylvania Infantry Regiment (monument)(unit history)
Lt. Colonel James M. Thomson (wounded July 1)
2nd Brigade (monument)
Brigadier General Henry Baxter
strength: 1,450 men
casualties: 40 killed, 260 wounded, 350 missing, 650 total
12th Massachusetts Infantry Regiment (monument)(unit history)
Colonel James L. Bates (wounded July 1)
Lt. Colonel David Allen, Jr.
83rd New York Infantry Regiment (9th New York Militia) (monument)(unit history)
Lt. Colonel Joseph A. Moesch
97th New York Infantry Regiment (monument)(unit history)
Colonel Charles Wheelock (captured July 1)
Lieutenant Colonel J.P. Spofford
11th Pennsylvania Infantry Regiment (monument)(unit history)
(transferred to 1st Brigade July 1)
Colonel Richard Coulter
88th Pennsylvania Infantry Regiment (monument)(unit history)
Major Benezet F. Foust (wounded July 1)
Captain Edmund Patterson
90th Pennsylvania Infantry Regiment (monument)(unit history)
Colonel Peter Lyle (temporarily transferred to 1st Brigade July 1)
Major Alfred Sellers (awarded Medal of Honor)
3rd Division (monument)
Major General Abner Doubleday (monument)
Brigadier General Thomas Rowley (July 1-2)
strength: 4.700 men
casualties: 600 killed, 1,685 wounded, 830 missing, 3,115 total
1st Brigade (monument)
Brigadier General Thomas Rowley (^ July 1-2)
Colonel Chapman Biddle
strength: 4,700 men
casualties: 265 killed, 1,300 wounded, 540 missing, 2,105 total
80th New York Infantry Regiment (20th New York Militia) (monument)(unit history)
Colonel Theodore B. Gates
121st Pennsylvania Infantry Regiment (monument)(unit history)
Major Alexander Biddle
Colonel Chapman Biddle (^ July 1-2)
142nd Pennsylvania Infantry Regiment (monument)(unit history)
Colonel Robert P. Cummins (mortally wounded July 1)
Lt. Colonel Alfred B. McCalmont
151st Pennsylvania Infantry Regiment (monument)(unit history)
Lt. Colonel George McFarland (wounded July 1)
2nd Brigade (monument)
Colonel Roy Stone (wounded July 1)
Colonel Langhorne Wister (wounded July 1)
Colonel Edmund L. Dana
strength: 1,320 men
casualties: 110 killed, 465 wounded, 280 missing, 855 total
143rd Pennsylvania Infantry Regiment (monument)(unit history)
Colonel Edmund L. Dana (^ July1)
Lt. Colonel John D. Musser (wounded July 1)
149th Pennsylvania Infantry Regiment (monument)(unit history)
Lt. Colonel Walton Dwight (wounded July 1)
150th Pennsylvania Infantry Regiment (monument)(unit history)
Colonel Langhorne Wister (^ July 1)
Lt. Colonel Henry S. Huidekoper (wounded July 1; Medal of Honor)
Major Thomas Chamberlain (wounded July 1)
Captain George B, Jones
3rd Brigade (monument)
Brigadier General George J. Stannard (wounded July 2 and 3)
Colonel Francis V. Randall
engaged strength: 1,950 men (12th & 15th Vermont detached guarding trains)
casualties: 45 killed, 275 wounded, 30 missing, 350 total
12th Vermont Infantry Regiment (detached guarding trains)
Colonel Asa P. Blunt
13th Vermont Infantry Regiment (monument)
Colonel Francis V. Randall (^ July 3)
Lt. Colonel William D. munson (wounded July 3)
Major joseph J. Boynton
14th Vermont Infantry Regiment (monument)
Colonel William T. Nichols
15th Vermont Infantry Regiment (detached guarding trains)
Colonel Redfield Proctor
16th Vermont Infantry Regiment (monument)
Colonel Wheelock G. Veazey (Medal of Honor)
Artillery Brigade (monument)
Colonel Charles S. Wainwright
strength: 600 men, 28 guns
casualties: 9 killed, 86 wounded, 10 missing, 105 total
2nd Maine Battery B (monument)
Captain James A. Hall
6 3″ Ordnance Rifles
5th Maine Battery E (monument)
Captain Greenleaf T. Stevens (wounded July 2)
Lieutenant Edward N. Whittier
6 Napoleons
1st Pennsylvania, Battery B (monument)
Captain James H. Cooper
4 3″ Ordnance Rifles
1st New York Batteries L & E (monument)
Captain Gilbert H. Reynolds (wounded July 1)
Lieutenant George Beck
6 3″ Ordnance Rifles
4th United States Battery B (monument)
1st Lieutenant James Stewart (wounded July 1)
1st Lieutenant James Davison (wounded July 1)
6 Napoleons