text: FM 7-100.1________________________________________________________________________________
  objective, and the enemy situation. A linkup with ground maneuver forces
  normally completes the mission of an airborne or heliborne force. Once linkup
  occurs, control of the landing force unit returns to the parent headquarters.
  SPECIAL-PURPOSE FORCES OPERATIONS
  13-37. The OPFOR maintains a broad array of SPF. One of the six service
  components, the SPF Command, provides the capability to attack both
  regional and extraregional enemies throughout their strategic depth. In
  addition to conducting direct action, this command fields strategic recon-
  naissance forces with which it is able to support national intelligence re-
  quirements. It also has a capability to support operations of terrorists and
  other irregular forces. The SPF Command includes both SPF units and com-
  mando units. Its units provide a balanced capability including some tactical
  transport for use in inserting SPF or commando units.
  13-38. In addition to the SPF Command, four of the other five service
  components have their own SPF. The Army, Naval, and Air Force SPF are
  intended primarily for use at the operational level and enable each service to
  conduct reconnaissance and direct action to the opponent’s operational depth.
  The Internal Security Forces also have their own highly-trained SPF units,
  equipped to conduct direct-action missions in the enemy’s rear. All of these
  SPF organizations provide the OPFOR a flexible and capable means of sup-
  port to regional, transition, and adaptive operations.
  13-39. The Air Force fields light transport aircraft for insertion of its own SPF
  or those belonging to other service components, within the region. The Navy’s
  submarine force may also insert SPF for reconnaissance or direct action out-
  side the region.
  COMMAND AND CONTROL
  13-40. The SPF Command includes both SPF units and commando units.
  (Command and control for the SPF Command’s commando units is discussed
  under the subsection on Commandos later in this chapter.) The Army, Navy,
  Air Force, and Internal Security Forces also have their own SPF. Any of these
  various types of SPF units may remain under the command and control of
  their respective service headquarters or may be suballocated to operational- or
  even tactical-level commands during task organization.
  Administrative Force Structure
  13-41. The SPF Command is one of the six service components subordinate to
  the SHC and is thus under the control of the General Staff. The General Staff
  normally reserves some SPF brigades under its own control for strategic-level
  missions as directed by its Intelligence Directorate. Likewise, the Army, Navy,
  and Air Force could maintain some of their own SPF directly subordinate to
  the service headquarters, although most of them are intended for use at the
  operational level and thus can be subordinate to operational-level commands,
  even in the administrative force structure.
  13-42. In peacetime and in garrisons within the State, SPF of both the SPF
  Command and other services are organized administratively into SPF companies,
  battalions, and brigades. These organizations facilitate peacetime administrative