The Seminole Negro Indian Scouts Cemetery functions as the burial ground of the Black Seminole Scouts, an elite U.S. Army auxiliary unit recruited beginning in 1870 from Black Seminole, or Mascogo, communities that had migrated from Florida through Indian Territory and Mexico before settling near the Texas border. Scouts from this unit served at Fort Clark and Fort Duncan under officers such as Lt. John Bullis, conducting reconnaissance and combat patrols against raiding parties along the frontier, service for which four of the scouts were awarded the Medal of Honor. Established in September 1872 near Brackettville, the cemetery today holds the remains of roughly a hundred or more scouts and their family members and remains an active burial ground rather than an abandoned relic. It is maintained by descendants of the scouts through the Seminole Negro Indian Scout Cemetery Association, a nonprofit reorganized in 1967 that draws its membership largely from Brackettville's Black Seminole descendant community. The association holds the site as a historical monument and stages an annual Seminole Scout Days commemoration honoring the unit's legacy, drawing descendants and visitors for ceremonies, music, and storytelling. Special grave markers dedicated in 1977 identify the resting places of the four Medal of Honor recipients, and the cemetery continues to serve both as a functioning family burial ground and as a living site of memory for the Black Seminole Scouts' service to the United States Army.