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 lists 99 names, attributed and consolidated to 31 identified warriors. Six unnamed Native American women and four unnamed children are known to have been killed at the beginning of the battle during Reno's charge. Among them were two wives and three children of the Hunkpapa Leader Pizi (Gall). The 7th Cavalry suffered 52 percent casualties: 16 officers and 242 troopers killed or died of wounds, 1 officer and 51 troopers wounded. Every soldier of the five companies with Custer was killed (except for some Crow scouts and several troopers that had left that column before the battle or as the