text: FM 7-100.1________________________________________________________________________________
  Preparation
  10-12. To prepare for offensive operations, engineer tasks include
  • Performing engineer reconnaissance of the terrain and the enemy.
  • Preparing assembly areas and movement routes for maneuver forces,
  including reserves.
  • Constructing protective positions for systems, units, and command
  posts (CPs).
  • Establishing and improving road networks to support maneuver forces.
  • Preparing alternative airfields and highway strips to support air assets.
  • Ensure the integration of engineer support to IW.
  Conduct
  10-13. During the conduct of offensive operations, engineer support in-
  cludes
  • Providing tailored engineer support where it is needed, when it is needed.
  • Continuing reconnaissance of the enemy and terrain.
  • Maintaining airfields and roads.
  • Improving road networks and other movement routes to support com-
  mitment of reserves or follow-on forces.
  • Providing support for the crossing of water obstacles and other gaps.
  • Constructing protective positions for systems, units, and CPs, as they
  relocate.
  • Helping to repel enemy counterattack.
  • Supplying engineer equipment, materials, and technical assistance to
  maneuver units and other OPFOR units.
  • Facilitate maneuver despite enemy and natural obstacles and possibly
  NBC-contaminated areas.
  SUPPORT TO DEFENSIVE OPERATIONS
  10-14. OSC engineer forces are heavily engaged in the preparation and con-
  duct of an operational defense. Comprehensive engineer preparation in the
  entire area of responsibility (AOR) is an important precondition for holding
  battle positions, as well as for troop maneuver.
  10-15. Engineer support for defensive operations places emphasis on fortify-
  ing battle positions and assembly areas, performing engineer camouflage,
  concealment, cover, and deception (C3D) measures, and adapting the terrain
  for defense. The defense is also conducive to the extensive use of various ob-
  stacles to interfere with the enemy’s advance.
  10-16. The general aims of engineer support to defensive operations include
  • Controlling access and tempo by delaying, disaggregating, and canaliz-
  ing enemy forces.
  • Establishing conditions necessary for organizing the defense.
  • Protecting personnel and equipment from the effects of conventional
  direct and indirect fires, precision munitions, and NBC attacks.