Action), at Fort McCoy, WI 87th Training Division, at Birmingham, AL 91st Training Division (Operations), in Jolon, CA 108th Training Command (Initial Entry Training), in Charlotte, NC, under operational control of Training and Doctrine Command 95th Training Division (Initial Entry Training), at Fort Sill, OK 98th Training Division (Initial Entry Training), at Fort Benning, GA 104th Training Division (Leader Training), at Joint Base Lewis–McChord, WA Individual Ready Reserve The Individual Ready Reserve (IRR) consists of individuals who are active reservists but not assigned to a particular Active Reserve Unit. Members of the IRR are encouraged to take advantage of training opportunities and are eligible for promotion provided all requirements are met. Retired Reserve The Retired Reserve consists of soldiers who have retired from either the active or reserve components of the Army but have not reached the age of 60. Other components The Army of the United States (AUS) is the official name for the conscripted force of the Army that may be raised at the discretion of the United States Congress, often at time of war or mobilization for war. The Army of the United States was first established in 1940 and its last use of the AUS was in 1974. The predecessors of the AUS were the National Army during World War I and the Volunteer Army during the American Civil War and Spanish–American War. See also Uniformed Services Employment and Reemployment Rights Act Comparable organizations Army National Guard (U.S. Army) United States Marine Corps Reserve United States Navy Reserve United States Coast Guard Reserve Air National Guard (U.S. Air Force) Air Force Reserve Command (U.S. Air Force) References Sources Wilson, John B. Maneuver and Firepower: The Evolution of Divisions and Separate Brigades. Washington, D.C.: Center of Military History (1997). External links Army Reserve News U.S. Army Reserve Full listings of Reserve units Army Reserve US Army Reserve Shooting Team United States Army Direct Reporting Units 1908 establishments in the United States