Reva, South Dakota Reva, South Dakota Reva is an unincorporated community in Harding County, South Dakota, United States. Although not tracked by the Census Bureau, Reva has been assigned the ZIP code of 57651. The community has the name of Reva Bonniwell, the daughter of a first settler. The Battle of Slim Buttes occurred here on September 9–10, 1876, in the Great Sioux Reservation between the United States Army and Miniconjou Sioux during the Great Sioux War of 1876. It marked the first significant victory for the Army since the stunning defeat of General George Custer at the Battle of Little Bighorn in
Battle of the Little Bighorn Defense Site and seven on the Little Bighorn Battlefield). The Indian Memorial, themed "Peace Through Unity" l is an open circular structure that stands from the 7th Cavalry obelisk. Its walls have some of the names of Indians who died at the site, as well as native accounts of the battle. The open circle of the structure is symbolic, as for many tribes, the circle is sacred. The "spirit gate" window facing the Cavalry monument is symbolic as well, welcoming the dead cavalrymen into the memorial. Battle of the Little Bighorn The Battle of the Little Bighorn, known to the