24th Infantry Regiment

Organized in 1869 after consolidation of two other Black units, 38th and 41st Infantry Regiments. For more than twenty years, the unit occupied military post in the southwest, protecting and maintaining peace on the turbulent frontier. In addition to battle engagements, the members of the regiment built roads, guarded stage stations, constructed and repaired telegraph lines, guarded waterholes, and escorted supply trains, survey parties, freight wagons and mail coaches, as well as performing scouting patrols.

25th Infantry Regiment

Organized at Jackson Barracks, Louisiana in April 1868, and composed of personnel from the all Black 39th and 40th Infantry Regiments. The enlisted men came mostly from northern Virginia and southern Louisiana, and all were seasoned Union veterans. The regiment only spent a short time at Jackson Barracks before moving to the Texas frontier.

In May and June 1870, the entire regiment went in bivouac for the last time as a unit for many years to come after which they were scattered to numerous posts in West Texas. They established and operated a lumber camp and sawmill, managed food and supply routes, built roads, buildings, telegraph lines, and carried out scouting functions while engaging in conflicts with various warring factions.