Fort Davis is important in understanding the presence of African Americans in the West and in the frontier military because the 24th and 25th U.S. Infantry regiments and the 9th and 10th U.S. Cavalry regiments, all-black regiments (known as the buffalo soldiers), which were established after the Civil War, were stationed at the post. Lt. Col. Wesley Merritt led Troops C, F, H, and I of the 9th Cavalry in reoccupying the fort on 29 June 1867. They rebuilt the fort, using limestone and adobe, outside the canyon walls.