text: Chapter 4
  Support to Large-Scale Ground Combat
  Engineer support in large-scale ground combat occurs throughout the depth of the AO.
  Engineers provide simultaneous and synchronized support to deep, close, and support
  area operations. Engineers plan obstacles that forces can emplace in the enemy rear
  AO. Knowledge of the terrain and terrain visualization can identify locations at which
  friendly forces can stop enemy reinforcements. Engineer reconnaissance identifies
  areas at which friendly forces require engineer effort in support of mobility. Attacking
  forces task-organize engineer units to provide mobility support to the main and
  supporting attacks and to the reserves. Engineers provide countermobility support to
  secure vulnerable flanks or prepare defenses.
  OFFENSIVE OPERATIONS
  Engineer support to the offense includes the simultaneous application of combat, general, and
  geospatial engineering disciplines through synchronizing warfighting functions and throughout the depth of
  the AO. Combat engineering in support of maneuver forces is the primary focus of engineers involved in the
  conduct of offensive operations; however, the three disciplines simultaneously apply their capabilities to
  some degree. The primary focus supports movement and maneuver. Figure 4-1 shows a notional application
  of engineering capabilities supporting offensive operations.
  Legend:
  FACE forward aviation combat engineering
  SSGF standard and sharable geospatial foundation
  Figure 4-1. Notional engineer support to offensive operations