On 29 December 1890, at Wounded Knee creek on the Pine Ridge Indian Reservation in South Dakota, the US 7th Cavalry Regiment surrounded the Lakota Sioux encampment and, after a small scuffle, opened fire with four Hotchkiss guns. At least 150 men women and children were massacred, many who were unarmed and fleeing. Some 20 soldiers were awarded the Medal of Honor