The 5th Armored Brigade is an AC/RC (that is, an active component/reserve component) unit based at Fort Bliss, Texas. The unit is responsible for training selected United States Army Reserve (USAR) & Army National Guard units west of the Mississippi River before they deploy to conduct combat operations overseas. The unit was formerly designated as 2nd Brigade, 91st Division. In 2007, the brigade was reassigned from Fort Carson, Colorado to Fort Bliss, Texas. The brigade was redesignated and re-missioned several times: