June 1861 • to July >

Commanded by Brigadier General Daniel Tyler* 

First Brigade	Colonel Erasmus Keyes
2nd Maine Infantry Regiment	Colonel Charles D. Jameson	from Maine via New York
1st Connecticut Infantry Regiment	Lieutenant Colonel Speidel	from Dept. Washington 6/24
2nd Connecticut Infantry Regiment	Colonel A. H. Terry	from Dept. Washington 6/24
3rd Connecticut Infantry Regiment	Colonel J. Chatfield	from Dept. Washington 6/24
Varian’s New York Battery	Captain J. Varian	from Annapolis, Md.
Second Brigade	Brig. Gen. Robert C. Schenck**
1st Ohio Infantry Regiment	Colonel A. McCook	from Dept. Washington
2nd Ohio Infantry Regiment	Colonel L. Wilson	from Dept. Washington
2nd New York State Militia	Colonel G. W. B. Tompkins	from New York 5/18; mustered in 5/28
New York Artillery, Battery B	Captain Thaddeus P. Mott	from 2nd NYSM (above)
2nd United States Artillery, Battery E	Captain Carlisle	from Regular Army
Third Brigade	Colonel W. T. Sherman
13th New York Infantry Regiment	Colonel Isaac F. Quinby	arrived 6/1 from New York
69th New York State Militia	Colonel Michael Corcoran	from Dept. Washington
79th New York Infantry Regiment	Colonel J. Cameron	arrived 6/3 from New York
2nd Wisconsin Infantry Regiment	Colonel P. S. Coon	arrived 6/25 from Wisconsin
3rd United States Artillery, Battery E	Captain Ayers	from Regular Army
Fourth Brigade	Colonel Israel Richardson
1st Massachusetts Infantry Regiment	Colonel R. Cowdin	arrived 6/17 from Massachusetts
12th New York Infantry Regiment	Colonel E. L. Walrath	arrived 6/1 from New York
2nd Michigan Infantry Regiment	Major A. W. Williams	arrived 6/10 from Michigan
3rd Michigan Infantry Regiment	Colonel D. McConnel	arrived 6/16 from Michigan
1st United States Artillery, Battery G	Lieutenant J. Edwards	from Regular Army
2nd United States Artillery, Battery M	Captain H. J. Hunt	from Regular Army

*Tyler’s commission was in the Connecticut militia
**Schenk’s commission was in the United States Volunteers