text: Fire Support in Depth During Large-Scale Combat Operations
  * Provide status of unit TA assets.
  * Exchange attack guidance and casualty criteria.
  * Exchange control measures in effect; for example, FSCMs, passage points, passage lanes, and
  contact points.
  * Coordinate recognition signals.
  * Provide information on obstacles and barriers.
  * Coordinate position areas.
  * Exchange intelligence.
  * Coordinate clearance of fire procedures.
  6-121. During forward passage the FA assets of the passing force should be infiltrated early from the rear
  assembly area to the designated primary positions to support the operation. These positions should be near
  the passage lanes but not so close that they interfere with the supported force movement. On a forward
  passage, position priority goes to the passing force. During the passage of lines, the passing force FSE and
  CP collocate with the stationary force FSE and CP. Position areas forward of the passage points are selected
  based on anticipated rate of movement of the supported forces and terrain availability. Also, they are selected
  away from passage points.
  6-122. During rearward passage the FA assets of the stationary force should be positioned well forward to
  provide deep fires to support the withdrawal of the passing force. Again, these positions should be away from
  passage lanes. In the rearward passage, the stationary force has positioning priority. As the passing force FA
  assets moves through, it should position behind the stationary FA assets and move laterally away from the
  passage lanes.
  6-123. FS planning considerations for a forward passage of lines are as follows:
  * 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.
  * Obscure the enemy's forward observation of the passage.
  * Plan fire on HPTs; for example, enemy direct-fire systems, C2, enemy FS assets, and air defense
  targets.
  * Plan fires to support the deception plan.
  * Plan smoke to screen friendly movement through passage points.
  * Plan fires to interdict enemy counterattacks and reinforcements in the area of passage.
  * Plan appropriate FSCMs as follows:
   Plan on-order CFL.
   Consider restrictive fire areas (RFAs or NFAs) on passage points.
  * Ensure passing force plans fires to support operations after the passage of lines.
  * Plan CFZs on passage points and assembly areas.
  * Continually update the CFL. FSCOORDS and FSOs must know the lead element's position
  continuously.
  * Assign priority of fire to the passing force.
  6-124. FS planning considerations for a rearward passage are as follows:
  * Plan obscurants to conceal movement through passage points.
  * Plan massed fires to disengage forces.
  * Plan fires to support obstacle and or barrier plans.
  * Plan fires to support the deception plan.
  * Plan FSCMs as follows:
   RFAs or NFAs at passage points.
   On-call CFLs.
  * Plan CFZs on passage points and assembly areas.