Fort Leonard Wood is a U.S. Army training installation located in the Missouri Ozarks. The main gate is located on the southern boundary of the city of St. Robert. The post was created in December 1940 and named in honor of General Leonard Wood in January 1941. Originally intended to train infantry troops, in 1941 it became an engineer training post with the creation of the Engineer Replacement Training Center. During World War II Italian and German POWs were interned at the fort. In 1984, as part of the Base Realignment and Closure process, most of the U.S. Army Engineer School's operations were consolidated at Fort Leonard Wood. Before that, officer training was conducted at Fort Belvoir, Virginia.

Leonard Wood was a United States Army major general, physician, and public official. He served as the Chief of Staff of the United States Army, Military Governor of Cuba, and Governor-General of the Philippines. He began his military career as an army doctor on the frontier, where he received the Medal of Honor. During the Spanish–American War, he commanded the Rough Riders, with Theodore Roosevelt as his second-in-command. Wood was bypassed for a major command in World War I, but then became a prominent Republican Party leader and a leading candidate for the 1920 presidential nomination.