text: FM 7-100.1________________________________________________________________________________
  with regular ground forces. In the latter role, commandos can conduct the
  following missions to ensure the success of the overall offensive action:
  13-79. Commandos can act as a disruption force, or as part of such a force. In
  addition to reconnaissance missions, they can be tasked with creating con-
  fusion in the disruption zone or in enemy territory by
  • Removing or emplacing obstacles.
  • Raiding and destroying headquarters, LOCs, and tactical missile firing
  locations.
  • Occupying key terrain features (in advance of regular ground forces).
  • Occupying ambush positions on enemy withdrawal routes.
  13-80. Commandos can act as a fixing force. In this role, they can set up
  ambushes or emplace obstacles to prevent further enemy forces from coming
  to the aid of the target the regular forces’ attack. They can occupy key terrain
  features that control choke points that hinder enemy reserve unit movements.
  Such choke points may be valleys, bridges, and crossroads that are critical for
  the enemy movement.
  13-81. Commandos can act as part of an assault force. In this role, they can
  conduct raids and surprise attacks against C2 sites, logistics elements, fire
  support units (to include attack helicopter units), and other high-priority civilian
  and military targets. They also conduct attacks against other objectives or seize
  terrain that hinders enemy reserve unit movements or hampers his withdrawal.
  13-82. As part of an exploitation force, commandos may attack a withdrawing
  enemy force from his flank and rear. Commando units can be air-inserted
  ahead of the withdrawing enemy force to establish ambush positions along the
  enemy’s withdrawal route.
  13-83. Defense. During a defensive operation conducted by an OSC, commando
  units allocated to the OSC can support the action primarily in reconnaissance
  and security roles. Commando units can conduct reconnaissance in the OSC
  disruption zone or deep in enemy territory. They may also act as a security
  force in the OSC support zone. When acting as a security force, commandos
  are normally employed as companies or battalions. The commando unit can be
  augmented with vehicles and/or additional forces (such as tank or mechanized
  units, fire support, or aviation) to act as an assault force in limited-objective
  attacks against enemy airborne, air assault, or special operations forces units.
  13-84. A commando battalion or company is seldom used as a combat force in
  the battle zone because of organization, equipment, and limited firepower.
  However, if the defensive mission is more important than reconnaissance or
  security, it may act as a combat force, using regular infantry or motorized
  infantry tactics. Commando units may fill gaps between the battle positions of
  regular forces. When performing such infantry-type missions, commandos are
  normally employed as companies or battalions.
  13-85. When OSC maneuver forces are forced to withdraw from an area, com-
  mando units can remain deployed in the OSC’s original disruption zone and
  battle zone to perform reconnaissance, raids, and ambushes. The stay-behind
  commandos attempt to maneuver in small teams to conduct reconnaissance