Division |
Brigade |
Regiments and Others |
Defenses North of the Potomac
BG Martin D. Hardin
|
1st Brigade
Col James M. Warner
|
- 151st Ohio: Col John M. C. Marble
- 13th Michigan Battery: Lt Charles Dupont
- 14th Michigan Battery: Cpt Charles Heine
- 9th New York Heavy Artillery (detachment)
- 1st Pennsylvania Artillery Battalion: Maj Joseph M. Knap
- 1st Rhode Island Light Artillery, Battery D: Cpt William M. Buckley
- 2nd U.S. Artillery, Battery I
- 3rd U.S. Artillery, Battery G
- 4th U.S. Artillery, Battery A: Lt Rufus King, Jr.
|
2nd Brigade
Ltc Joseph A. Haskin
|
- 150th Ohio: Col William H. Hayward
- 170th Ohio: Col Miles J. Saunders
- New Hampshire Heavy Artillery, 1st Company: Cpt Charles H. Long
- 1st Ohio Light Artillery, Battery L: Cpt Franklin C. Gibbs
- 2nd Pennsylvania Heavy Artillery: Cpt John Norris
- 2nd U.S. Artillery, Battery I: Lt William P. Graves
- 7th Veteran Reserve Corps
- 21st Veteran Reserve Corps
|
3rd Brigade
Ltc John H. Oberteuffer
|
- Massachusetts Heavy Artillery (detachment)
- 3rd U.S. Artillery, Battery G: Lt Herbert F. Guthrie
- 1st Pennsylvania Light Artillery
|
Defenses South of the Potomac
BG Gustavus A. DeRussy
|
1st Brigade
Col Joseph N. G. Whistler
|
- 145th Ohio: Col Henry C. Ashwill
- 147th Ohio: Col Benjamin R. Rosson
- 164th Ohio: Col John C. Lee, Ltc Augustus S. Bement
- 1st Maine Artillery, Battery A: Cpt Albert W. Bradbury
- Maryland Light Artillery, Battery A: Cpt James H. Rigby
- Maryland Light Artillery, Battery D: Cpt John M. Bruce
- 6th Massachusetts
- 18th Massachusetts (detachment)
- 1st New York Light Artillery, Battery K: Cpt Solon W. Stocking
- 5th New York Battery: Cpt Elijah D. Taft
- 84th New York
- 1st Pennsylvania Light Artillery, Battery G: Cpt Beldin Spence
- 1st Pennsylvania Light Artillery, Battery H: Cpt Andrew Fagan
- 1st Rhode Island Artillery, Battery H
- 1st U.S. Artillery, Battery E
- 2nd U.S. Artillery, Battery G: Lt James E. Wilson
|
2nd Brigade
Col Thomas Wilhelm
|
- Massachusetts Heavy Artillery, 15th Company
- 16th Massachusetts Independent Battery
- Pennsylvania Light Artillery, Battery C: Capt James Thompson
- Pennsylvania Light Artillery, Battery I: Cpt Robert J. Nevin
- 1st New York Heavy Artillery, Battery K
- 17th New York Artillery, Independent Battery
- 169th Ohio: Col Nathaniel Haynes
- 1st Rhode Island Light Artillery, Battery H: Cpt Crawford Allen
- 1st U.S. Artillery, Battery E: Lt Frank S. French
|
3rd Brigade created 10 July
Col William Smith Irwin
|
- Maryland Artillery, Battery D
- 136th Ohio: Col William Smith Irwin
- 142nd Ohio (detachment)
- 166th Ohio: Col Harrison G. Blake
- 16th Indiana Battery: Cpt Charles R. Deming
- Massachusetts Heavy Artillery, 15th Company: Cpt Joseph M. Parsons
- 1st New York Heavy Artillery, Battery F: Cpt William R. Wilson
- 1st Pennsylvania Heavy Artillery, Independent Battery
- 72nd Pennsylvania (detachment)
- 106th Pennsylvania (detachment)
|
4th Brigade created 2 July
Maj. Charles C. Meservey
|
- 66th New York (detachment)
- 136th Ohio (detachment)
- 10th New York Heavy Artillery (detachment)
- 1st West Virginia Light Artillery, Battery C: Cpt Wallace Hill
- 1st Wisconsin Heavy Artillery, Company A
- 2nd Massachusetts Cavalry (detachment)
|
Cavalry
Col Charles Russell Lowell
|
- 2nd Massachusetts Cavalry: Ltc Caspar Crowninshield
- 13th New York Cavalry: Col Henry Gansevoort
- 16th New York Cavalry: Col Henry M. Lazelle
|
District of Washington
Col Moses N. Wisewell
|
1st Veteran Reserve Brigade
Col George W. Gile
(attached to Hardin's Division)
|
- 1st Regiment, Veteran Reserve Corps
- 9th Regiment, Veteran Reserve Corps
- 6th Regiment, Veteran Reserve Corps
- 19th Regiment, Veteran Reserve Corps
- 20th Regiment, Veteran Reserve Corps
- 22nd Regiment, Veteran Reserve Corps
|
Not brigaded
|
- 27th Pennsylvania, Company F
- 150th Pennsylvania, Company K
- Union Light Guard (Ohio Cavalry)
- U.S. Ordnance Detachment
|
Cavalry Division
Col William Gamble
|
1st Division
Cpt Benjamin Rockafellow
|
- 1st Brigade: Lt Charles Parker (Detachments of 1st, 5th, 6th and 7th Michigan cavalry regiments)
- 2nd Brigade: Lt William J. Allen (Detachments of 4th, 6th and 9th New York and 17th Pennsylvania cavalry regiments)
- Reserve Brigade: Lt Marcellus E. Jones (Detachments of 19th New York, 6th Pennsylvania, 1st Rhode Island, 1st, 2nd, 5th and 6th U.S. cavalry regiments)
|
2nd Division
Cpt James T. Peale
|
- 1st Brigade: Lt George W. Brooks (Detachments of 1st Massachusetts , 1st New Jersey, 10th New York, 6th Ohio, 1st and 3rd Pennsylvania cavalry regiments)
- 2nd Brigade: Cpt Robert A. Robinson (Detachments of 1st Maine, 2nd, 4th, 8th, 13th and 16th Pennsylvania cavalry regiments)
|
3rd Division
Maj Henry W. Sawyer
|
- 1st Brigade: Cpt Robert Loudon (Detachments of 1st Connecticut, 2nd Ohio, 18th Pennsylvania, 2nd, 3rd and 5th New York cavalry regiments)
- 2nd Brigade: Lt George W. Byard (Detachments of 8th Illinois, 3rd Indiana, 1st Ohio, 1st Vermont, 8th, 22nd and 25th New York cavalry regiments)
|
District of Alexandria
BG John P. Slough
(not engaged)
|
2nd Veteran Reserve Brigade
Col William H. Browne
|
- 3rd Regiment, Veteran Reserve Corps: Ltc John Spiedel
- 12th Regiment, Veteran Reserve Corps: Col Addison Farnsworth
|
Not brigaded |
- 1st District of Columbia: Ltc Robert Boyd
- Pennsylvania Light Artillery, Battery H: Cpt William Borrowe
- 8th Illinois Cavalry, Company D: Cpt Henry J. Hotop
- 1st Michigan Cavalry, Company D: Cpt Thurlow W. Lusk
|