The armory at the Dillon Readiness Center was constructed in 1970. It departed from the plan used throughout the 1950s and 1960s and is characterized as a Type C armory with a drill hall that measures 15 feet shorter than Type D armories built during the same period at Easley and Walterboro (Ward-Brandt Consulting 2017:12). The armory was first assessed by Ward-Brandt Consulting under contract through the SCIAA in 2017.

The 2017 survey of the Dillon Readiness Center noted that the drill hall’s brick facing on the north elevation has been covered with standing-seam metal. New windows have been installed on the drill hall’s east and west clerestory and new fascia, gutters, and downspouts have been installed around the building. HVAC and AC units have also been installed around the building. Some of the interior classes and offices have also been subdivided and drywall has been installed to reconfigure these rooms as needed. In 2015, the original roof was also removed and a new roof added. In 2016, the structure underwent asbestos abatement and the floors were repaired. Despite these changes, the armory was recorded as having a high degree of architectural integrity.