Original sentence: George LeRoy Irwin, commander of the 57th Field Artillery Brigade during World War I.In 1940, President Franklin Roosevelt established the Mojave Anti-Aircraft Range, a military reservation of approximately  in the area of the present Fort Irwin.In 1942, the Mojave Anti-Aircraft Range was renamed Camp Irwin, in honor of Maj.Two years later, Camp Irwin was deactivated and placed on surplus status