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 He was driven back, retreating toward the hill where his body was found. As the scenario seemed compatible with Custer's aggressive style of warfare and with evidence found on the ground, it became the basis of many popular accounts of the battle. According to Pretty Shield, the wife of Goes-Ahead (another Crow scout for the 7th Cavalry), Custer was killed while crossing the river: "...and he died there, died in the water of the Little Bighorn, with Two-bodies, and the blue soldier carrying his flag". In this account, Custer was allegedly killed by a Lakota called Big-nose. However, in Chief