The Louisiana Maneuvers were a series of U.S. Army exercises held around Northern and Western-Central Louisiana, including Fort Polk, Camp Claiborne and Camp Livingston, in 1940 and 1941. The exercises, which involved some 400,000 troops, were designed to evaluate U.S. training, logistics, doctrine, and commanders. Many Army officers present at the maneuvers later rose to very senior roles in World War II, including Omar Bradley, Mark Clark, Dwight D. Eisenhower, Walter Krueger, Lesley J. McNair, Joseph Stilwell, and George Patton.