Fort Irwin is a large U.S. military base located in the Mojave Desert, known for its National Training Center (NTC).

Fort Irwin is a major U.S. Army base situated in the central Mojave Desert in California. It is home to the National Training Center (NTC), which provides realistic training for military units by simulating a variety of combat scenarios in a desert environment. The base is used for large-scale maneuvers and includes a variety of training facilities, mock urban environments, and vast open spaces for troop exercises. While Camp Pendleton, Fort Bragg, and Camp Lejeune are important military bases, they are located in different regions of the United States and not in the Mojave Desert.