The fields of the Mumma (the white buildings to the middle left) and Roulette Farms (middle right).
Note the undulating terrain which alternately sheltered and exposed troops of each side to weaponry of the other.
Antietam National Battlefield, Sharpsburg, Maryland.
 

The Roulette Farm in 1862.
Courtesy of the Library of Congress.
Sharpsburg, Maryland.
 

The ruins of the Mumma farm, burned by the Confederate Army to render it useless as a safe position for Union sharpshooters.
According to NPS officials, years later, the Confederate soldier ordered to burn the farm wrote to the Mumma family to apologize.
Courtesy of the Library of Congress.
Sharpsburg, Maryland.