Commanded by Major General Darius N. Couch

The 1st Division, 4th Corps moved down Pleasant Valley towards Harpers Ferry on September 17 and did not arrive on the battlefield until the day after the battle.

First Brigade	Brigadier General Charles Devens Jr.
7th Massachusetts Infantry Regiment	Colonel David Allen Russell
10th Massachusetts Infantry Regiment	Colonel Henry L. Eustis
36th New York Infantry Regiment	Colonel William Henry Browne
2nd Rhode Island Infantry Regiment	Colonel Frank Wheaton
Second Brigade	Brigadier General Albion Parris Howe
62nd New York Infantry Regiment	Colonel David J. Nevin
93rd Pennsylvania Infantry Regiment	Colonel James Mayland McCarter
98th Pennsylvania Infantry Regiment	Colonel John Frederick Ballier
102nd Pennsylvania Infantry Regiment	Colonel Thomas A. Rowley
139th Pennsylvania Infantry Regiment	Colonel Frederick Hill Collier
Third Brigade	Brigadier General John Cochrane
65th New York Infantry Regiment	Colonel Alexander Shaler
67th New York Infantry Regiment	Colonel Julius W. Adams
122nd New York Infantry Regiment	Colonel Silas Titus
23rd Pennsylvania Infantry Regiment	Colonel Thomas H. Neill
61st Pennsylvania Infantry Regiment	Colonel George C Spear
82nd Pennsylvania Infantry Regiment	Colonel David H. Williams
Artillery	Captain Emory Upton
3rd Battery, New York Light Artillery	Captain William Stuart
Battery C, 1st Pennsylvania Light Artillery	Captain Jeremiah McCarthy
Battery D, 1st Pennsylvania Light Artillery	Captain Michael Hall
Battery G, 2nd United States Artillery	Lieutenant John Hartwell Butler

 

Key
(k) = killed, (w) = wounded, (mw) = mortally wounded, (c) = captured
Links for regiments, batteries, companies, and individuals go to unit histories or biographies on www.civilwarintheeast.com