U.S. Army - Army of the Potomac - Third Corps

First Division

Brigadier General Fitz John Porter

Third Corps created March 3, 1862 and announced March 13.

First Brigade

Brigadier General J. H. Martindale

2nd Maine Infantry Regiment

Colonel Charles W. Roberts

18th Massachusetts Infantry Regiment

22nd Massachusetts Infantry Regiment

from Martindale's Bde., Porter's Div.

13th New York Infantry Regiment

Colonel John Pickell (to 3/31)

25th New York Infantry Regiment

Colonel Charles A. Johnson

Second Brigade

Brigadier General George Morrell

4th Michigan Infantry Regiment

Colonel Dwight A. Woodbury

from Morrell's Bde., Porter's Div.

9th Massachusetts Infantry Regiment

14th New York Infantry Regiment

Colonel James McQuade

62nd Pennsylvania Infantry Regiment

Colonel Samuel W. Black

Third Brigade

Brigadier General Daniel Butterfield

16th Michigan Infantry Regiment

Colonel Thomas Stockton

12th New York Infantry Regiment

Colonel Henry A. Weeks

17th New York Infantry Regiment

Colonel H. Seymour Lansing

Colonel Stephen W. Stryker

from Buttefield's Bde., Porter's Div.

Colonel John W. McLane

Artillery & Sharpshooters

3rd Massachusetts Battery

5th Massachusetts Battery

1st Rhode Island Artilery, Battery C

from Porter's Div.

5th United States Artillery, Battery D

1st United States Sharpshooters