text: Chapter 6
  * Ensure the stationary force supports the close operation while the passing force indirect-fire assets
  complete the passage.
  * Ensure counterfire is planned and controlled by the stationary force.
  * Plan fires on passage points to be fired after friendly units have passed through. Consider use of
  scatterable mines to close passage lanes.
  * Ensure the stationary force plans fires to support operations after the passage of lines.
  * The FSE of the stationary force sends liaison to the FSE of the passing force.
  MOBILITY OPERATIONS
  6-125. Freedom to move and maneuver within an OA is essential to the application of combat power and
  achieving results across the range of military operations. An OE will present numerous challenges to
  movement and maneuver. These are typically overcome through the integration of combined arms mobility
  and countermobility in support of mission requirements.
  BREACHING OPERATIONS
  6-126. The plan must synchronize combat multipliers to isolate the point of penetration. Breach is a tactical
  mission task in which a unit breaks through or establishes a passage through an enemy obstacle. (FM 3-90).
  The breaching force employs all available means to break through or establish a passage through an enemy
  defense, obstacle, minefield, or fortification. As a general rule, obstacles are covered by fire; a primary role
  for the FA is to suppress the weapons systems that can engage the rupture force. The staff integrates
  maneuver, CAS, artillery, mortars, Army aviation, electronic attack, the employment of scatterable mines,
  air defense, obscuration, and deception to create the conditions for the success of the breaching operation.
  Additionally, the maneuver force must continue to fight well beyond the breach area to stop the enemy from
  counterattacking or repositioning to reinforce the enemy unit targeted for penetration. Detecting and engaging
  the enemy's reserve is a primary concern. The FS planners must carefully balance resource requirements
  (such as Army indirect fires and CAS) for isolating the point of penetration with the requirements of the
  element conducting the breach. The breaching fundamentals are suppress, obscure, secure, reduce, and
  assault. They can be remembered with the memory aid SOSRA.
  6-127. Suppress:
  * Suppress enemy's direct fire systems near the breach site.
  * Suppression must also be effective against the enemy's indirect fires that can range the breach site.
  * The FSCOORD should designate the breach site as a CFZ for WLRs.
  * Suppress the enemy to allow the follow-and-support force to get into the support by fire position.
  6-128. Obscure:
  * Reduce effectiveness of direct fire weapons against the breach and assault elements.
  * Screen the follow-and-support force movement to the support by fire position, if necessary.
  * Smoke should be used with fog or darkness to maximize effectiveness.
  * The commander must decide on the priority for the munition types.
  * Smoke may attract enemy attention or degrade friendly TA or control.
  6-129. Secure:
  * Mortars and FA continue suppression and obscuration as necessary while maneuver forces secure
  the breach site.
  * Support stay-behind forces.
  6-130. Reduce:
  * As maneuver forces with engineer support reduce the obstacle and creates lanes the FA and
  mortars should continue suppression fires and be prepared to lift or shift fires.
  * CAS and attack helicopters should disrupt enemy counterattack forces.
  * Upon reduction of the obstacle and after a foothold is established on the far side of the obstacle,
  obscuring smoke should be lifted.