text: Chapter 3
  ENGINEER SUPPORT TO DIVISION AND BELOW OPERATIONS
  The division is the Army’s primary tactical warfighting headquarters. Its primary role is to serve as a
  tactical headquarters exercising C2 of BCTs and supporting brigades in decisive action. Depending on
  mission, enemy, terrain and weather, troops and support available–time available and civil considerations, it
  commands up to five BCTs and a mix of functional brigades. The division combines offensive, defensive,
  stability, or DSCA operations in an AO assigned by its higher headquarters, normally a corps. It task-
  organizes its subordinate forces according to mission variables to accomplish its assigned mission.
  With staff augmentation, the division headquarters may serve as a joint force land component
  headquarters in a smaller-scale contingency or as an ARFOR headquarters (primarily for operational tasks)
  in smaller-scale contingencies without additional Army augmentation. With extensive augmentation, it may
  serve as a JTF for a small-scale contingency. When serving as the ARFOR, JFLCC, or JTF, the division is
  primarily concerned with the conduct of operational tasks. The theater army provides most of the
  administrative control and Army support to forces deployed in the joint operations area (JOA)
  Joint manning documents determine other Service officer and noncommissioned officer augmentation
  that the division staff requires to perform duties as a JTF or JFLCC headquarters. When serving as a JTF
  headquarters, the division headquarters organizes and operates in accordance with joint doctrine. (See JP
  3-31 for more doctrine on the JFLCC, and see JP 3-33 for more doctrine on the JTF.) When conducting
  operations, the division synchronizes and integrates warfighting functions primarily from the tactical-level
  perspective.
  At the division echelon, the engineer staff officer and other engineer staff assist in understanding and
  translating the Army design methodology into a division concept of operations. The division engineer staff
  analyzes the operation and begins to concentrate on courses of action (COAs) for arranging forces in relation
  to each other and employing combat power to accomplish the mission. Just as corps echelon engineers
  validate analysis supporting the operational echelon engineer design, the divisional engineer analysis adds
  detail or offers new information for operational consideration. Ultimately, as operational-level engineers
  refine and address requirements at their echelon, the division echelon engineers gain understanding of the
  operational requirements that must be included in the conduct of division operations. Division echelon
  engineers concentrate on the substantial development of engineering requirements and capabilities necessary
  to the division concept of operation. The divisional engineer analysis is operationally broad enough to include
  general and geospatial engineering support not included in the Army design methodology. The analysis is
  more comprehensive and detailed in considering and shaping combat, general, and geospatial engineering
  requirements for arranging and employing divisional forces. Figure 3-3 shows an example of how the division
  echelon engineer integrates tactical engineer actions (shown in the preceding paragraphs as the top-most set
  of tasks, resting on the foundation from theater and corps echelons in the illustration) through warfighting
  functions to support the division concept of operations.
  Operational echelon commanders seek to create the most favorable conditions possible for the
  employment of divisions. The division meets the needs of JFCs by enabling the tactical command to be
  capable of translating designs into concepts and decisions into actions. It synchronizes forces and warfighting
  functions in time, space, and purpose to accomplish missions. The division perspective is substantially shaped
  by the operational approach described by the theater and is focused on the tactical actions inferred from that
  approach. The division echelon engineer perspective similarly includes a solid operational foundation from
  which to focus on the detailed tactical level requirements for shape and prevent activities (see figure 3-3).