This is the monument placed on U.S. Highway 71 in Greenwood, Arkansas, as a memorial to the Battle of Devil's Backbone. The engagement took place on September 1, 1863, when Confederate forces along the ridge of a mountain called "Devil's Backbone" ambushed Federal forces as they advanced south along the Jenny Lind Road

This is a closeup of the plaque on the monument

This is a view of the old Jenny Lind road as it leads up and over Devil's Backbone ridge. There is a bit of a dispute between Oklahoma and Arkansas as to the location of the engagement. Oklahoma places it more to the west on the opposite side of the state line. Official accounts of the engagement indicated it took place as Federal troops were marching from Fort Smith to Waldron, via the small town of Jenny Lind, Arkansas. The old road from Jenny Lind to Waldron leads over the ridge at this point