The other four barracks buildings were built to house infantrymen. Barracks 5 and 6 were built in 1871 and remodeled in the 1920s to house a unit of US National Guard. The buildings had mostly fallen to ruin by 1947, when they were purchased by the Fort Concho Museum. Reconstruction of Barracks 5 and 6 was completed in 1951 as living history spaces. A veranda wraps around the mess halls. Barracks 3 and 4 were identical to Barracks 5 and 6. The latter buildings were demolished after the fort was abandoned and have not been rebuilt.