text: Appendix B
  ARFOR
  This appendix discusses the role of the ARFOR. While an ARFOR controls forces
  operationally, this appendix discusses the ARFOR’s administrative and support
  responsibilities to subordinate Army forces and to other Services in a joint force.
  ARFOR OVERVIEW
  B-1. The ARFOR is the Army component and senior Army headquarters of all Army forces assigned or
  attached to a combatant command, subordinate joint force command, joint functional command, or
  multinational command. The ARFOR is the Army component of any joint force. Army doctrine
  distinguishes, however, between the Army component of a combatant command and that of a joint force
  formed by the combatant commander. The Army component of a geographic combatant command is called
  the ASCC, and the Army component of the subordinate joint force is an ARFOR.
  Note. The Army’s designation for an ASCC assigned to a geographic combatant command is the
  theater army.
  ARMY SERVICE COMPONENT COMMAND
  B-2. The ASCC is the senior Army command assigned to a combatant command. It consists of the Army
  Service component commander and all those Army forces, such as individuals, units, detachments,
  organizations, and installations under that command, including the support forces assigned to a combatant
  command or further assigned to a subordinate unified command.
  B-3. ASCC commanders exercise command authorities, normally OPCON, of assigned and attached Army
  forces as delegated by the combatant commander, and ADCON as delegated by the Secretary of the Army.
  ADCON is the Army’s responsibility to administer and support Army forces even while in a combatant
  command AOR. OPCON is the basic authority for command and control of the same Army forces.
  B-4. ADCON for Army units in a combatant command normally extends from the Secretary of the Army
  through the ASCC, through an ARFOR, and then to the Army units assigned or attached to an Army
  headquarters in that command. However, ADCON is not tied to the operational chain of command. The
  Secretary of the Army may redirect some or all Service responsibilities outside the normal ASCC channels.
  In similar fashion, the ASCC may distribute some administrative responsibilities outside the ARFOR.
  ARFOR IN A SUBORDINATE JOINT FORCE
  B-5. All joint force commands that include Army forces have an ARFOR. JTFs are the organizations most
  often used by a combatant commander for contingencies. The typical JTF has a combination of service and
  functional components (See figure B-1 on page B-2). JTF commanders normally exercise OPCON of all U.S.
  forces through functional component commands, Service components, subordinate JTFs, or a combination
  of these. The senior Army officer assigned to a JTF, other than the JFC and members of the JTF staff,
  becomes the ARFOR commander. The ARFOR commander answers to the Secretary of the Army through
  the ASCC for most ADCON responsibilities.