The Marine Corps Air Ground Combat Center at Twentynine Palms, Ca., is the Marine Corps' premier live-fire combined arms training base. It is the largest Marine Corps installation, encompassing more than 800,000 acres. Our expansive size and dynamic environment allow for full-scale, Marine Expeditionary Brigade-level live-fire and maneuver training, all of which help ensure the combat readiness of the operating forces and support our responsibilities to national security.