< to July • August 1864 to September >

Commanded by Major General C. C. Augur

Defences North of the Potomac

Brigadier General Martin D. Hardin
First Brigade Colonel John M.C. Marble (to 8/16)
Colonel J. H. Kitching
14th Michigan Independent Battery to 2 Brig. (below)
New Hampshire Heavy Artillery Company A to 2 Brig. (below)
6th New York Heavy Artillery
9th New York Heavy Artillery (4 cos.)
41st New York Infantry (6 Cos.) from Dept. South, Dist. Hilton Head
151st Ohio Infantry Regiment Colonel John M. C. Marble mustered out 8/27
1st Pennsylvania Artillery Battalion
2nd United States Artillery, Battery I
3rd United States Artillery, Battery G
4th United States Artillery, Battery A
Second Brigade Colonel William H. Hayward
Colonel H.G. Thomas
14th Michigan Independent Battery from 1 Brig. (above)
New Hampshire Heavy Artillery Company A from 1 Brig. (above)
150th Ohio Infantry Regiment Colonel William H. Hayward mustered out 8/23
4th Regiment Veteran Reserve Corps
7th Regiment Veteran Reserve Corps
10th Regiment Veteran Reserve Corps
21st Regiment Veteran Reserve Corps
Third Brigade Lieutenant Colonel J.H. Oberteuffer
Massachusetts Heavy Artillery, 7 Cos.
Fort Foote
13th Michigan Independent Battery from 1 Brig. (above)
New Hampshire Heavy Artillery Company B

Defences South of the Potomac

Brigadier General Gustavus A. DeRussy
First Brigade Colonel J.N.G. Whistler
Maryland Artillery, Battery D to 4 Brig. (below)
Massachusetts Heavy Artillery, 3 Cos. from 4 Brig. (below(
6th Massachusetts State Militia to Fort Delaware
10th New York Heavy Artillery from 1 Brig. 2 Div. 18 Corps
84th New York State Militia Colonel Frederick A. Conkling
145th Ohio Infantry Regiment Colonel Henry C. Ashwell mustered out 8/20
164th Ohio Infantry Regiment Lieutenant Colonel Augustus S. Bement mustered out 8/27
Pennsylvania Battalion (2 Cos.)
1st Pennsylvania Artillery, Battery H
1st Rhode Island Artillery, Battery H
1st United States Artillery, Battery E
2nd United States Artillery, Battery G
Second Brigade Colonel T. Wilhelmn
1st New York Artillery, Battery K
147th Ohio Infantry Regiment Colonel Benjamin F. Rosson mustered out 8/30
169th Ohio Infantry Regiment Colonel Nathaniel Haynes to Ohio to muster out
74th Pennsylvania Infantry Regiment from Dept. South
Third Brigade Colonel W. Smith Irwin
16th Indiana Battery
Massachusetts Heavy Artillery, 3 Cos. to 1 Brig.
1st New York Artillery, Battery F
103rd New York Infantry Regiment from Dept. South
136th Ohio Infantry Regiment Colonel W. Smith Irwin mustered out 8/30
142nd Ohio Infantry Regiment Colonel William C. Cooper to Ohio to muster out
166th Ohio Infantry Regiment Colonel Harrison G. Blake to Ohio to muster out
Pennsylvania Independent Battery I Captain Robert J. Nevin
72nd Pennsylvania Infantry Regiment mustered out 8/24
104th Pennsylvania Infantry Regiment
3rd Regiment Veteran Reserve Corps
Fourth Brigade Major C.C. Meservey
Maryland Artillery, Battery D from 1 Brig. (above)
136th Ohio Infantry Cos. A,B,D&K mustered out 8/30
1st West Virginia Artillery, Battery C
1st Wisconsin Heavy Artillery, Bat. A
12th Regiment Veteran Reserve Corps Colonel A. Farnsworth to Dist. Alexandria

District of Washington

Colonel M. N. Wisewell
150th Pennsylvania Infantry, Co. K Captain David Derickson Lincoln’s Bodyguard
1st Brigade Colonel M. N. Wisewell (to 7/8)
Colonel G. W. Gile
1st Regiment Veteran Reserve Corps Colonel R.H. Rush
6th Regiment Veteran Reserve Corps Colonel M.N. Wisewell
9th Regiment Veteran Reserve Corps Colonel G.W. Gile
19th Regiment Veteran Reserve Corps
22nd Regiment Veteran Reserve Corps
Second Brigade Colonel W.H. Browne
18th Regiment Veteran Reserve Corps from new org.
24th Regiment Veteran Reserve Corps Colonel W.H. Browne

District of Alexandria

Brigadier General John P. Slough
1st District of Columbia Infantry Regiment
2nd District of Columbia Infantry Regiment Colonel Charles M. Alexander
26th Michigan Infantry, Company F
Pennsylvania Independent Battery H Captain William Borrowe
12th Regiment Veteran Reserve Corps Colonel A. Farnsworth from DeRussey’s Div. 4 Brig. (above)

St. Mary’s Point District

Brigadier General James Barnes
5th Massachusetts Cavalry Regiment
139th Ohio Infantry Regiment mustered out 8/26
2nd Wisconsin Battery

Independent Cavalry Brigade

Colonel Charles R. Lowell, Jr.
Colonel H.M. Lazelle
2nd Massachusetts Cavalry Regiment Colonel Charles R. Lowell, Jr. to 1 Div. Cav. Corps, Army Shenandoah
13th New York Cavalry (Companies A-F) Lieutenant Colonel Henry S. Gansevoort
16th New York Cavalry (Companies A-D)

Light Artillery Camp (Camp Barry)

1st Maine Battery to Army Shenendoah 19 Corps
16th Massachusetts Battery
6th New York Independent Battery
1st United States Artillery, Battery K
3rd United States Artillery, Battery L
4th United States Artillery, Battery A
5th United States Artillery, Battery I