United States Army > Army of the Potomac


< to July • August 1864 • to September >

Commanded by Major General Gouverneur K. Warren

Provost Guard

 
12th New York Infantry, Cos. D&F Major Henry W. Ryder  

First Division

Brigadier General J. J. Bartlett (to 8/9)
Brigadier General Charles Griffin
First Brigade Colonel W. S. Tilton (to 8/27)
Lieutenant Colonel W. A. Throop
 
121st Pensylvania Infantry Regiment    
142nd Pensylvania Infantry Regiment    
143rd Pensylvania Infantry Regiment    
149th Pensylvania Infantry Regiment    
150th Pensylvania Infantry Regiment Colonel H. S. Huidekoper  
187th Pensylvania Infantry Battalion Lieutenant Colonel Joseph F. Ramsey  
Second Brigade Colonel E. M. Gregory
22nd Massachusetts Infantry Regiment Colonel William S. Tilton  
32nd Massachusetts Infantry Regiment Lieutenant Colonel Luther Stephenson  
91st Pensylvania Infantry Regiment    
155th Pensylvania Infantry Regiment Colonel Alfred L. Pearson  
21st Pennsylvania Cavalry (Dismounted)    
Third Brigade Colonel Norval E. Welch (to 8/9)
Brigadier General J. J. Bartlett (to 8/17)
Colonel James Gwyn
20th Maine Infantry Regiment    
18th Massachusetts Infantry Regiment    
1st Michigan Infantry Regiment Lieutenant Colonel William A. Throop  
16th Michigan Infantry Regiment Colonel Norval E. Welch  
44th New York Infantry Regiment Lieutenant Colonel Freeman Conner  
83rd Pennsylvania Infantry Regiment Major William H. Lamont  
118th Pennsylvania Infantry Regiment Colonel James Gwynn (^ 8/17)  

Second Division

Brigadier General Romeyn B. Ayres
First Brigade Brigadier General Joseph Hayes (c 8/19)
Colonel F. Winthrop (to 8/21)
Colonel C. P. Stone
5th New York Veteran Infantry    
15th New York Heavy Artillery   from 3 Brig. (below)
2nd United States Infantry Regiment    
10th United States Infantry Regiment    
11th United States Infantry Regiment    
12th United States Infantry Regiment    
17th United States Infantry Regiment    
Second Brigade Colonel Nathan T. DuShane (k 8/21)
Colonel Samuel A. Graham
 
1st Maryland Infantry Regiment Lieutenant Colonel John W. Wilson  
4th Maryland Infantry Regiment Colonel Richard N. Bowerman  
7th Maryland Infantry Regiment    
8th Maryland Infantry Regiment Colonel Andrew W. Denison  
Purnell Legion Maryland Infantry Colonel Samuel A. Graham (^ 8/21)  
Third Brigade (until 8/21) Colonel J. Howard Kitching
6th New York Heavy Artillery   to 1 Brig. Hardin’s Div. 22 Corps, Dept. Washington
15th New York Heavy Artillery   to 1 Brig. (above)
Third Brigade (reorganized) Colonel J. W. Hoffman reorganized 8/24
3rd Delaware Infantry   from
4 Div. 2 Brig. (below)
4th Delaware Infantry  
76th New York Infantry Regiment Major John W. Young
95th New York Infantry Regiment Major Edward Pye
147th New York Infantry Regiment Major George Harney
56th Pennsylvania Infantry Regiment  
157th Pennsylvania Infantry Regiment  

Third Division

Brigadier General Samuel W. Crawford
First Brigade Colonel Peter Lyle (to 8/27)
Colonel T. F. McCoy
16th Maine Infantry Regiment    
39th Massachusetts Infantry Regiment Colonel P. Stearns Davis  
104th New York Infantry Regiment Colonel Gilbert G. Prey  
90th Pennsylvania Infantry Regiment    
107th Pennsylvania Infantry Regiment    
190th Pensylvania Infantry Regiment   from 3 Brig. (below)
191st Pensylvania Infantry Regiment   from 3 Brig. (below)
Second Brigade Brigadier General Henry Baxter (to 8/15)
Colonel Richard Coulter (to 8/18)
Colonel Charles Wheelock (to 8/29)
Brigadier General Henry Baxter
94th New York Infantry Regiment Lieutenant Colonel Samuel Moffett  
97th New York Infantry Regiment Colonel Charles Wheelock  
11th Pennsylvania Infantry Regiment    
88th Pennsylvania Infantry Regiment    
Third Brigade (to 8/21) Colonel William Hartshorne (to 8/21) consolidated with 1 Brig. 8/21
190th Pensylvania Infantry Regiment   to 1 Brig. (above)
191st Pensylvania Infantry Regiment   to 1 Brig. (above)
Third Brigade (after 8/21) “Iron Brigade” Colonel Edward S. Bragg 
7th Indiana Infantry Regiment Colonel Ira G. Grover from
4 Div. 1 Brig. (below)
8/24
19th Indiana Infantry Regiment  
24th Michigan Infantry Regiment Colonel Henry A. Morrow
1st New York Sharpshooter Battalion Captain Volney J. Shipman
Independent Battalion Wisconsin Volunteers Captain Dennis B. Daily (w 8/21) 
Lieutenant Albert T. Morgan
6th Wisconsin Infantry Regiment Lieutenant Colonel John Mansfield
7th Wisconsin Infantry Regiment Major Mark Finnicum

Fourth Division

Brigadier General Lysander Cutler (mw 8/24) *dissolved – see note
First Brigade (“Iron Brigade”) Colonel Edward S. Bragg 
7th Indiana Infantry Regiment Colonel Ira G. Grover redesignated
3 Div. 3 Brig.
8/24
19th Indiana Infantry Regiment  
24th Michigan Infantry Regiment Colonel Henry A. Morrow
1st New York Sharpshooter Battalion Captain Volney J. Shipman
Independent Battalion Wisconsin Volunteers Captain Dennis B. Daily
6th Wisconsin Infantry Regiment Lieutenant Colonel John Mansfield
7th Wisconsin Infantry Regiment Major Mark Finnicum
Second Brigade Colonel J. W. Hoffman  
3rd Delaware Infantry   redesignated
2 Div.  3 Brig.
8/24
4th Delaware Infantry  
76th New York Infantry Regiment Major John W. Young
95th New York Infantry Regiment Major Edward Pye
147th New York Infantry Regiment Major George Harney
56th Pennsylvania Infantry Regiment  
157th Pennsylvania Infantry Regiment  
Artillery Captain Augustus P. Martin
3rd Massachusetts Battery Lieutenant Aaron F. Walcott  
5th Massachusetts Battery Captain Charles A Phillips  
9th Massachusetts Battery    
1st New York Artillery, Battery B    
1st New York Artillery, Battery C    
1st New York Artillery, Battery D    
1st New York Artillery, Battery E    
1st New York Artillery, Battery H    
1st New York Artillery, Battery L    
15th New York Independent Battery    
1st Pennsylvania Artillery, Battery B    
4th United Artillery, Battery B    
5th United Artillery, Battery D    

Note: After General Cutler was badly wounded at the Battle of Globe Church (he would die in 1866 from complications from his wound) the Fourth Division was dissolved on August 28 and its two brigades were attached to different divisions in the Fifth Corps.