About Fort Irwin, CA
Fort Irwin National Training Center is a United States Army base and training facility located in San Bernardino County, California in the Mojave Desert. Situated 37 miles from the town of Barstow and resting in the Calico Mountains, Fort Irwin houses just under 9,000 soldiers.
This military facility was built in 1940, originally designed as an anti-aircraft range. The Mojave Anti-Aircraft Range was put in place by Franklin D. Roosevelt. The facility was renamed for Major General George LeRoy Irwin in 1942. The fort was used as a training center during World War I, but was closed shortly after, and did not reopen again until 1951 when it served as a combat training facility during The Korean War.
The occupants of the current main fort are formed by The U.S. Army Forces Command while an opposing force for training exercises, the 11th Armored Cavalry Regiment, make camp at a lower elevation.