In the 1870s, the U.S. Army relied on Black Seminole (Seminole-Negro) Indian scouts in campaigns against raiding Native Americans along the Texas-Mexico border. In April 1875, Lt. John L. Bullis and three scouts — Sergeant John Ward, Private Pompey Factor and Trumpeter Isaac Payne — left Fort Clark to scout for raiders in this area. After four days, they found a fresh trail and on April 25, within a half-mile of this site, they engaged a party of about 30 Comanche Indians with dozens of horses. Outgunned and outnumbered, the scouts withdrew, but Bullis' horse bolted, stranding him. Factor and Payne provided cover fire, and Ward rescued his Lieutenant. The three Seminole scouts later received Medals of Honor for their gallantry.