text: Mobility
  Assault
  18-31. A breach is complete when the attacking force has assaulted through the obstacle, seized the far side
  objective, eliminated enemy direct and observed indirect fires on the reduction area and, if planned, the battle
  handover with follow-on forces. Engineers support the flow of combat forces through the lanes or bridges to
  build combat power quickly on the far side. These forces may entail follow-on breakout forces if the initial
  assault forces culminate or establishes defensive areas to manage operational reach and sustainment for future
  operations.
  Breach Organization
  18-32. Units organize into the following three forces to conduct a breach:
  * Support.
  * Breach.
  * Assault.
  Establishing the breach organization facilitates the application of the breaching fundamentals. Table 18-2
  shows the responsibilities of the support, breach, and assault forces.
  Table 18-2. Support, breach, and assault force responsibilities
  Breach
  Responsibilities
  Organization
  Suppress an enemy capable of placing direct fires on the reduction area to protect the
  breach force as it reduces the obstacle and the assault force as it passes through the
  created lane.
  Support force Fix enemy forces to isolate the reduction area.
  Control obscuration.
  Control other suppressive effects such as electromagnetic warfare and air and missile
  defense.
  Reduce, proof, and mark the necessary number of lanes through the obstacle.
  Report the status and location of created lanes.
  Provide local security on the near side and far side of the obstacle.
  Breach force
  Provide additional suppression of enemy overwatching the obstacle.
  Provide additional obscuration in the reduction area.
  Assist the passage of the assault force through created lanes.
  Seize the far side objective.
  Reduce the enemy protective obstacles.
  Provide clear routes from the reduction area to the battle handover line for follow-on
  forces.
  Prevent the enemy from placing direct fires on follow-on forces as they pass through the
  Assault force
  created lanes.
  Conduct battle handover with follow-on forces.
  Provide reinforcing fires for the support force.
  Destroy the enemy on the obstacle far side that is capable of placing direct fires on the
  reduction area.
  Planning a Breach
  18-33. Units use the reverse planning process when planning a breach. The reverse planning process begins
  with actions on the objective and moves backward to the LD, since seizing an objective is typically the
  decisive point at the tactical level and directly tied to mission accomplishment. Maneuver planners use
  reverse planning and force ratios to determine the size and composition of the maneuver forces that will
  perform the tasks that support the main and supporting effort for each COA. Actions on the objective drive
  the size and composition of the force that conducts the final assault onto the objective as part of an attack,
  which dictates lane requirements (the number and location of required lanes). Lane requirements and the