{{Infobox military unit | unit_name = 100th Training Division | image = 100th Infantry Division SSI.svg | image_size = 150px | caption = 100th Training Division shoulder sleeve insignia | dates = 1918–19191921–19461946–present | country = | allegiance = | branch = | type = Training | role = | size = Division | command_structure = United States Army Reserve Command | current_commander = | garrison = Fort Knox, Kentucky, U.S. | ceremonial_chief = | nickname = CenturySons of Bitche | motto = "Success in Battle""Soldiers of the Century""Train 'em Tough!" | colors = Blue and red | march = | mascot = | battles = World War I World War II Rhineland Ardennes-Alsace Central Europe | notable_commanders = Withers BurressAndrew Tychsen | anniversaries = | identification_symbol = | identification_symbol_label = Distinctive unit insignia }} The 100th Training Division (Leader Development) (formerly the 100th Infantry Division) is a division of the United States Army headquartered at Fort Knox, Kentucky. It currently serves as a major training command of the United States Army Reserve. It has been known as the "Century Division"'' owing to its "100th" designation. Throughout its long history, the division has taken on numerous roles. Serving as the 100th Infantry Division until the 1950s, the division then briefly became the 100th Airborne Division before becoming the 100th Division (Training). Since this transformation, the division has primarily taken on numerous training roles for other Army units. It was originally activated in mid-1918, too late to join the fighting in World War I. The division is best known for its exploits during World War II as the 100th Infantry Division. Fighting in the European Theater, the division advanced through France and Germany through the end of the war, fending off heavy German counterattacks along the way. World War II would be the only war the division would see active combat in before taking on its role as a training unit. History World War I The 100th Division was constituted on 12 July 1918 in the National Army. It was organized in October of that year at Camp Bowie, Texas. It was assigned the 199th Infantry Brigade commanding the 397th Infantry Regiment, the 398th Infantry Regiment and the 200th Infantry Brigade, commanding the 399th Infantry Regiment and the 400th Infantry Regiment. Each brigade commanded around 8,000 soldiers. The division then began preparations to deploy to Europe and join the American Expeditionary