Commanded by Major General Edward O.C. Ord
| Headquarters Guard | ||
| 2nd Pennsylvania Heavy Artillery, Co. D | Captain Edwin A. Evans | |
| 3rd Pennsylvania Heavy Artillery, Co. I | Captain Osbourn Wattson | |
Twenty Fourth Corps |
Major General John Gibbon | |
| Headquarters Guard | Captain Charles E. Thomas | |
| 4th Massachusetts Cavalry, Co.F | Captain Joseph J. Baker | |
| 4th Massachusetts Cavalry, Co.K | Captain Charles E. Thomas | |
First Division |
Brigadier General Robert S. Foster | |
| First Brigade | Colonel Thomas O. Osborn | |
| 39th Illinois Infantry Regiment | Captain Homer A. Plympton | |
| 62nd Ohio Infantry Regiment | Lieutenant Colonel Henry R. West (w 4/6) Major Thomas Platt |
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| 67th Ohio Infantry Regiment | Colonel Alvin C. Voris | |
| 85th Pennsylvania, Company G | Lieutenant Absolom S. Dial | |
| 199th Pennsylvania Infantry Regiment | Colonel James C. Briscoe | merged w/ 188 PA 6/28 |
| Second Brigade | ||
| 55th Pennsylvania Infantry Regiment | Captain George H. Hill | mustered out 8/30 |
| Third Brigade | Colonel George B. Dandy | |
| 10th Connecticut Infantry Regiment | Captain Francis G. Hickerson | |
| 11th Maine Infantry Regiment | Captain Henry C. Adams | |
| 24th Massachusetts Infantry Regiment | Captain Thomas F. Edmands | |
| 89th New York Infantry Regiment | Captain William Dobie | to 2 Brig. (above) |
| 100th New York Infantry Regiment | Captain Edwin Nichols | |
| 206th Pennsylvania Infantry Regiment | Colonel Hugh J. Brady | mustered out 6/26 |
| Fourth Brigade | Colonel Harrison S. Fairchild | |
| 8th Maine Infantry Regiment | Captain Edward H. Reybolds | |
| 148th New York Infantry Regiment | Colonel John B. Murray | mustered out 6/22 |
| 158th New York Infantry Regiment | Lieutenant Colonel William H. McNary | mustered out 6/30 |
Third Division |
Brigadier General Charles Devens | |
| First Brigade | Colonel Edward H. Ripley | |
| 11th Connecticut Infantry Regiment | Major Charles Warren | |
| 13th New Hampshire Infantry Regiment | Lieutenant Colonel Normand Smith | mustered out 6/22 |
| 81st New York Infantry Regiment | Captain Matthew T. Betton | |
| 98th New York Infantry Regiment | Lieutenant Colonel William Kreutzer | |
| 139th New York Infantry Regiment | Major Theodore Miller | mustered out 6/19 |
| 19th Wisconsin Infantry Regiment | Major Samuel K. Vaughan | |
| Second Brigade | Colonel Michael T. Donohoe | |
| 8th Connecticut Infantry Regiment | Major William M. Pratt | |
| 5th Maryland Infantry Regiment | Lieutenant Colonel William W. Bamberger | |
| 10th New Hampshire Infantry Regiment | Captain Warren M. Kelley | |
| 12th New Hampshire Infantry Regiment | Lieutenant Colonel Thomas E. Barker | |
| 96th New York Infantry Regiment | Major George W. Hindes | |
| 118th New York Infantry Regiment | Lieutenant Colonel Levi S. Dominy | mustered out 6/13 |
| 9th Vermont Infantry Regiment | Lieutenant Colonel Valentine G. Barney | |
| Third Brigade | Colonel Samuel H. Roberts | |
| 21st Connecticut Infantry Regiment | Lieutenant Colonel James F. Brown | |
| 40th Massachusetts Infantry Regiment | Lieutenant Colonel John Pollack | |
| 2nd New Hampshire Infantry Regiment | Lieutenant Colonel Joab N. Patterson | |
| 58th Pennsylvania Infantry Regiment | Lieutenant Colonel Cecil Clay | |
| 188th Pennsylvania Infantry Regiment | Lieutenant Colonel George K. Bowen | |
Independent Division |
Brevet Major General John W. Turner | |
| First Brigade | Lieutenant Colonel Potter | |
| 34th Massachusetts Infantry Regiment | Captain Frank T. Leach | mustered out 6/16 |
| 116th Ohio Infantry Regiment | Lietenant Colonel Wilbert B. Teters | mustered out 6/14 |
| 123rd Ohio Infantry Regiment | Lietenant Colonel Horace Kellogg | mustered out 6/12 |
| Second Brigade | Colonel William B. Curtis | |
| 23rd Illinois Infantry Regiment | Captain Patrick M. Ryan | to 1st Brig. (above) |
| 54th Pennsylvania Infantry Regiment | Lieutenant Colonel Albert Moulton | at Parole Camp |
| 12th West Virginia Infantry Regiment | Captain Erastus Bartlett | mustered out 6/16 |
| Third Brigade | Brigadier General Thomas M. Harris | |
| 10th West Virginia Infantry Regiment | Captain Marshal W. Coburn | to 2 Brig. (above) |
| 11th West Virginia Infantry Regiment | Major Michael A. Ayers | mustered out 6/17 |
| 15th West Virginia Infantry Regiment | Lieutenant Colonel John W. Holliday | mustered out 6/14 |
24th Corps Artillery |
Major Charles C . Abell | |
| 3rd New York Artillery, Battery E | Captain George E. Ashby | mustered out 6/23 |
| 3rd New York Artillery, Battery H | Captain Enoch Jones | mustered out 6/19 |
| 3rd New York Artillery, Battery K | Captain James R. Angel | mustered out 6/30 |
| 3rd New York Artillery, Battery M | Captain John H. Howell | mustered out 6/26 |
| 17th New York Independent Battery | Captain George T. Anthony | mustered out 6/12 |
| 1st Pennsylvania Artillery, Battery A | Captain William Stitt | |
| 1st Rhode Island Artillery, Battery F | Lieutenant Charles E. Guild | mustered out 6/27 |
| 1st United States Artillery, Battery B | Captain Samuel S. Elder | |
| 4th United States Artillery, Battery L | Lieutenant Henry C. Hasbrouck | |
| 5th United States Artillery, Battery A | Lieutenant Charles P. Muhlenberg | |
| 5th United States Artillery, Battery F | Lieutenant Henry B. Beecher | |
Separate Brigade |
Brigadier General Joseph B. Carr | |
| Fort Pocahontas | Lieutenant Colonel Ashbel W. Angel | |
| 38th New Jersey (4 cos.) | Major William H. Tantum | mustered out 6/30 |
| 20th New York Cavalry, Co. D | Captain Wayland F. Ford | |
| 16th New York Heavy Artillery, Cos. E&H | Captain Henry C. Thompson | |
| 184th New York Infantry, Co. I | Captain George Wetmore | |
| Fort Powhatan | Colonel William J. Sewell | |
| 38th New Jersey (6 cos.) | Colonel William J. Sewell | mustered out 6/30 |
| 20th New York Cavalry, Co. F | Lieutenant John E. Pollard | |
| 3rd Pennsylvania Heavy Artillery (det.) | Lieutenant Frederick Gill | |
| 1st United States Colored Cavalry, Co. E | Captain Charles W. Emerson | |
| Harrison’s Landing | Colonel Wardwell G. Robinson | |
| 184th New York Infantry | Lieutenant Colonel William P. McKinley | |
| 1st United States Colored Cavalry, Co. I | Lieutenant Horace Hudson | |
Unattached Cavalry |
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| 4th Massachusetts Cavalry, Cos. I,L,M | ||
| 5th Massachusetts Cavalry (Colored) | Colonel Charles Adams, Jr. | to Dept. Texas |
| 7th New York Cavalry | Colonel Edwin V. Sumner | |
Engineers |
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| 1st New York Engineers | Colonel James F. Hall | mustered out 6/30 |
Pontoniers |
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| 3rd Massachusetts Heavy Artillery, Co. I | Captain John Pickering, Jr. |