Fort Sam Houston - The U.S. Army has maintained a presence in the Alamo City since 1845. During that time, the installation has performed five distinct and important roles: that of a headquarters, logistical base, mobilization and training site, garrison and provider of medical support. Fort Sam Houston Army Post

Lackland Air Force Base - The 37th Training Wing, Lackland AFB, San Antonio, Texas, is the largest training wing in the Air Force. The 37th TRW provides basic military, professional and technical skills, and English language training for the Air Force, other military services, government agencies, and allies. Its four primary training functions graduate more than 86,000 students annually. Lackland Air Force Base

Brooks City Base  - The 311th Human Systems Wing, Brooks City-Base, Texas, is assigned to the Aeronautical Systems Center, Wright-Patterson AFB, Ohio. The wing is the birthplace, home, and future of aerospace medicine. Wing personnel enhance the performance of expeditionary Airmen through aerospace medicine knowledge, operational force health protection, surveillance, response, technology, and full integration with Air Force systems, unleashing human capability. Brooks City Base

Randolph Air Force Base - Randolph AFB is home to the 12th Flying Training Wing, the only unit in the Air Force conducting both pilot instructor training and combat systems officer training.  In addition, the 12th FTW provides host-base support to more than 30 Department of Defense units, including HQ Air Education and Training Command, Air Force Personnel Center and Air Force Recruiting Service.  Training the World's Finest Airmen for Tomorrow ... Deploying Combat-Ready Warriors Today. Randolph Air Force Base