The Houston Light Guard was one of the oldest militia companies founded in Texas. Founded in 1873, it served as Company G of the 143rd Infantry Regiment during both World Wars and later as A co 2nd Battalion, 143rd Infantry after the Pentomic division system. It was a part of the National Guard's only Airborne Infantry Brigades, was a Ranger Company, and a Long Range Surveillance Company. The Houston Light Guard moniker is an official US Army special designation.

A National Guard Armory, National Guard Armory Building, or National Guard Readiness Center is any one of numerous buildings of the U.S. National Guard where a unit trains, meets, and parades. A readiness center supports the training, administration, and logistics of National Guard units by providing assembly space, classrooms, weapons and protective personal equipment storage, and training space. Readiness centers can also be utilized as communal assembly areas, utilized by local organizations and governments.