The monument at Antietam to the 21st Massachusetts Volunteer Infantry Regiment is on the east side of Antietam Creek at Burnside Bridge. (Burnside’s Bridge tour map; 39.450782° N, 77.731583° W; map location) It was dedicated on September 17, 1898.
The 21st Massachusetts was commanded at the battle of Antietam by Colonel William S. Clark, a professor of chemistry at Amherst College.
For many years the monument, along with those of the 51st Pennsylvania and the 35th Massachusetts, was mounted on the end parapets of the Burnside Bridge. In the early 1960s auto traffic was moved to a new bridge upstream, the Burnside Bridge was restored, and the monuments were moved to their current location on the east bank.
From the monument:
21st Mass. Vol. Inf’y
2nd Brig. 2nd Div.
The following Comrades were killed near this bridge:
|2nd Lieut.||Henry C. Holbrook|
|Co. D Priv.||Wm. B. Boynton|
|” ” “||Amos S. Eastman|
|Co. E Corp.||Henry K. Buss|
|” ” Priv.||Geo. T. Bigelow|
|Co. G Corp.||Jas. S. Stratton|
|” ” Priv.||Daniel Daley|
|” I Priv.||Chas. Leonard|
|Co. K 1st Sergt.||Geo. W. Davis|
|” ” Priv.||Chas. S. Brigham|
and 35 other wounded
21st Regt. Mass. Vol.