Pennsylvania monuments at Antietam
The monument at Antietam to the 12th Pennsylvania Cavalry Regiment is on Mansfield Avenue. (Smoketown Road North tour map) It was dedicated on September 17, 1904.
The 12th Pennsylvania Cavalry was commanded at the Battle of Antietam by Major James A. Congdon. It was on independent duty with the Provost Marshal rounding up stragglers and handling Confederate prisoners behind the First and Twelfth Corps lines.

From the monument:
12th Pennsylvania Cavalry
113th of the line
4th Brigade Cavalry Division
Recruited in Philadelpia.
Battles participated in
Second Manassas Fisher’s Hill Clarksburg
Sugar Loaf Mountain Monocacy Charlestown
South Mountain Frederick Maryland Heights
Antietam Newtown Hamilton
Moorfield Winchester 1-2-3 Bunker Hill
Woodstock Cedar Creek Smithfield
Sleepy Creek Bolivar Heights
Dunningham Cross Roads
Solomon’s Gap Crampton’s Pass Hamilton
Pleasant Valley Kernstown Halltown
Edenburg Boonsboro

Location of the monument
The monument to the 12th Pennsylvania Cavalry is north of Sharpsburg on the north side of Mansfield Avenue 78 yards west of Smoketown Road (39.484396° N, 77.742683° W).
See more about the history of the 12th Pennsylvania Cavalry Regiment during the Civil War.
