First Division, Twelfth Army Corps, Army of the Potomac

Brigadier General Alpheus S. Williams (took over 12th corps) Brigadier General Samuel W. Crawford (w) Brigadier General George H. Gordon (marker)
First Brigade (marker)	Brigadier General Samuel W. Crawford (w) Colonel Joseph F. Knipe
10th Maine Infantry Regiment	Colonel George L. Beal (w)
28th New York Infantry Regiment	Captain William H. H. Mapes
46th Pennsylvania Infantry Regiment	Colonel Joseph F. Knipe Lieutenant Colonel James L. Selfridge
124th Pennsylvania Infantry Regiment	Coonell Joseph W. Hawley (w) Major Isaac L. Haldeman
125th Pennsylvania Infantry Regiment	Colonel Jacob Higgins
128th Pennsylvania Infantry Regiment	Colonel Samuel Croasdale (k) Lieutenant Colonel William W. Hammersly (w) Maj0r Joel B. Wanner
Third Brigade (marker) (marker)	Brigadier General George H. Gordon Col Thomas H. Ruger (w)
27th Indiana Infantry Regiment	Colonel Silas Colgrove
2nd Massachusetts Infantry Regiment	Colonel George L. Andrews
13th New Jersey Infantry Regiment	Colonel Ezra A. Carman
Pennsylvania Zouaves d'Afrique	(attached to 2nd Massachusetts)
3rd Wisconsin Infantry Regiment	Colonel Thomas H. Ruger (w)
Key to notes: (k) = killed, (w) = wounded, (mw) = mortally wounded, (c) = captured (monument) links to a monument page and (marker) links to a War Department marker page on this site Links on divisions go to subordinate units Links on regiments, batteries, companies, and individuals go to unit histories or biographies on www.civilwarintheeast.com

First Brigade (marker)