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


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


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