IRR members may be assigned to control groups other than Reinforcement and Annual Training as authorized under AR 140-10, chapter 8. Some soldiers maintain their military affiliation without being in the Ready or Retired Reserve but may be mobilized when Congress declares a national emergency.
Standby soldiers are in an active status.
Soldiers whose immediate recall to active duty would cause an extreme personal or community hardship. Soldiers who have temporary medical defects or prolonged illness that are curable within one year. Soldiers obligated by law who are enrolled in recognized theological or divinity schools. Soldiers who are fulfilling a missionary obligation. Inactive Enlisted soldiers designated as key federal employees are assigned to the Inactive Control Group.