text: Chapter 2
  Figure 2-1. Engineer application of combat power
  Combined arms is the synchronized and simultaneous application all elements of combat power that
  together achieve an effect greater than if each arm was used separately or sequentially (ADP 3-0). The
  warfighting functions provide engineers a common framework to link the required engineering capabilities
  to the synchronized application of combined arms.
  COMMAND AND CONTROL
  The command and control warfighting function is the related tasks and systems that develop and
  integrate those activities enabling a commander to balance the art of command and the science of control in
  order to integrate the other warfighting functions (ADP 3-0). It is unique in that it integrates the activities of
  the other warfighting functions.
  Engineer units must integrate the operations process activities for the unit while interacting with the
  activities of the unit being supported. The interaction may be primarily through an engineer staff assigned to
  the supported unit or through staff counterparts. In some cases, a supported unit may not have assigned
  engineer staff, so the supporting unit provides support as well. This relationship and degree of interaction is
  determined by many factors, including the type of unit and echelon being supported and the command or
  support relationship established. This manual addresses the C2 of engineer forces separately from engineer
  staff participation in the supported commander processes.
  There are typically not enough engineering capabilities available to accomplish the desired engineer
  tasks. Careful prioritization must occur. Even more challenging is that once they are in the AO, force-tailored
  engineer units must be able to rapidly transition among elements of operations.