Other Names: Mechanicsville, Ellerson’s Mill

Location: Hanover County

Campaign: Peninsula Campaign (March-September 1862)

Date(s): June 26, 1862

Principal Commanders: Brig. Gen. Fitz John Porter [US]; Gen. Robert E. Lee [CS]

Forces Engaged: 31,987 total (US 15,631; CS 16,356)

Estimated Casualties: 1,700 total (US 400; CS 1,300)

Description: Second of the Seven Days’ Battles. Gen. Robert E. Lee initiated his offensive against McClellan’s right flank north of the Chickahominy River. A.P. Hill threw his division, reinforced by one of D.H. Hill’s brigades, into a series of futile assaults against Brig. Gen. Fitz John Porter’s V Corps, which was drawn up behind Beaver Dam Creek. Confederate attacks were driven back with heavy casualties. Jackson’s Shenandoah Valley divisions, however, were approaching from the northwest, forcing Porter to withdraw the next morning to a position behind Boatswain Creek just beyond Gaines’ Mill.

Result(s): Union victory

CWSAC Reference #: VA016

Preservation Priority: IV.2 (Class B)