| Defences North of the Potomac |
Lieutenant Colonel Joseph A. Haskins |
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| First Brigade |
Colonel William H. Hayward |
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| Maryland Battery A |
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| 13th Michigan Independent Battery |
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| 14th Michigan Independent Battery |
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| 143rd Ohio Infantry Regiment |
Colonel William H. Vodrey |
to Dept. VA & NC 10 Corps 3 Div. |
| 150th Ohio Infantry Regiment |
Colonel William H. Hayward |
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| 1st Pennsylvania Artillery Battalion |
|
from 3 Brig. (below) |
| 1st Rhode Island Artillery, Battery D |
|
from 9th Corps Artillery |
| 4th United States Artillery, Battery A |
|
from Army Potomac Horse Art. |
| Second Brigade |
Colonel John M. C. Marble |
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| 151st Ohio Infantry Regiment |
Colonel John M. C. Marble |
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| 163rd Ohio Infantry Regiment |
Colonel Hiram Miller |
to Dept. VA & NC 10 Corps 3 Div. |
| 170th Ohio Infantry Regiment |
Colonel Miles J. Saunders |
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| 1st Ohio Artillery, Battery L |
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| New Hampshire Heavy Artillery Company A |
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| 2nd United States Artillery, Battery I |
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| Third Brigade |
Lieutenant Colonel J.H. Oberteuffer |
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| Massachusetts Heavy Artillery, 7 Cos. |
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| 9th New York Independent Battery |
|
mustered out 6/13 |
| 1st Pennsylvania Artillery Battalion |
|
to 1 Brig. (above) |
| 3rd United States Artillery, Battery G |
|
from 9 Corps Reserve Artillery |
| Fort Foote |
|
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| New Hampshire Heavy Artillery Company B |
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| Defences South of the Potomac |
Brigadier General Gustavus A. DeRussy
|
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| First Brigade |
Colonel John C. Lee
|
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| 1st Maine Light Artillery |
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| Maryland Artillery, Battery D |
|
from 8 Corps Middle Dept. |
| 5th New York Independent Battery |
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| 138th Ohio Infantry Regiment |
Colonel Samuel S. Fisher |
to Dept. VA & NC 18 Corps, 3 Div. |
| 145th Ohio Infantry Regiment |
Colonel Henry C. Ashwell |
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| 147th Ohio Infantry Regiment |
Colonel Benjamin F. Rosson |
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| 164th Ohio Infantry Regiment |
Lieutenant Colonel Augustus S. Bement |
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| 169th Ohio Infantry Regiment |
Colonel Nathaniel Haynes |
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| 1st Pennsylvania Artillery, Battery G |
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| 1st Pennsylvania Artillery, Battery H |
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| 2nd United States Artillery, Battery G |
|
from Army Potomac Horse Art. |
| Second Brigade |
Colonel W. Smith Irwin |
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| 16th Indiana Battery |
|
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| Massachusetts Heavy Artillery, 3 Cos. |
|
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| 16th Massachusetts Battery |
|
from Camp Barry (below) |
| 1st New York Artillery, Battery F |
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| 17th New York Independent Battery |
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| 136th Ohio Infantry Regiment |
Colonel W. Smith Irwin |
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| 142nd Ohio Infantry Regiment |
Colonel William C. Cooper |
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| 166th Ohio Infantry Regiment |
Colonel Harrison G. Blake |
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| Pennsylvania Independent Battery C |
|
from Camp Barry (below) |
| Pennsylvania Independent Battery F |
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| Pennsylvania Independent Battery I |
Captain Robert J. Nevin |
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| 1st Rhode Island Artillery, Battery H |
|
from 9 Corps Res. Artillery |
| 1st West Virginia Artillery, Battery C |
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| 1st Wisconsin Heavy Artillery, Bat. A |
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| 1st United States Artillery, Battery E |
|
from Army Potomac Horse Art. |
| District of Washington |
Colonel M. N. Wisewell |
|
| 2nd District of Columbia Infantry Regiment |
Colonel Charles M. Alexander |
to District Alexandria (below) |
| 150th Pennsylvania Infantry, Co. K |
Captain David Derickson |
Lincoln’s Bodyguard |
| First Brigade |
Colonel R.H. Rush |
|
| 1st Regiment Veteran Reserve Corps |
Colonel R.H. Rush |
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| 6th Regiment Veteran Reserve Corps |
Colonel M.N. Wisewell |
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| 9th Regiment Veteran Reserve Corps |
Colonel G.W. Gile |
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| 19th Regiment Veteran Reserve Corps |
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| 22nd Regiment Veteran Reserve Corps |
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| Second Brigade |
Colonel W.H. Browne |
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| 18th Regiment Veteran Reserve Corps |
|
from new org. |
| 24th Regiment Veteran Reserve Corps |
Colonel W.H. Browne |
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| District of Alexandria |
Brigadier General John P. Slough
|
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| Slough’s Independent Brigade |
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| 1st District of Columbia Infantry Regiment |
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| 2nd District of Columbia Infantry Regiment |
Colonel Charles M. Alexander |
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| 26th Michigan Infantry, Company F |
|
from Army Potomac 2 Corps 1 Div. |
| Pennsylvania Independent Battery H |
Captain William Borrowe |
|
| St. Mary’s Point District |
Colonel A. G. Draper |
from Dept. VA & NC |
| 139th Ohio Infantry Regiment |
|
from Ohio |
| 4th Rhode Island Infantry |
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| 2nd Wisconsin Battery |
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| Independent Cavalry Brigade |
Colonel H.M. Lazelle
Colonel C. R. Lowell, Jr.
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| 2nd Massachusetts Cavalry Regiment |
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| 13th New York Cavalry (Companies A-F) |
Lieutenant Colonel Henry S. Gansevoort |
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| 16th New York Cavalry (Companies A-D) |
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| Light Artillery Camp (Camp Barry) |
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| 1st Maine Light Artillery |
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| 3rd Maine Light Artillery |
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| 16th Massachusetts Battery |
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| 1st New York Artillery, Battery K |
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| 6th New York Independent Battery |
|
from Army Potomac Horse Art. |
| 10th New York Independent Battery |
Lieutenant Charles T. Bruen |
to 6th NY Ind. Battery (above) |
| 5th United States Artillery, Battery F |
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| 5th United States Artillery, Battery I |
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| 5th United States Artillery, Battery L |
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