text: Engineer Support to Shape, Prevent, and DSCA
  CORPS ENGINEER ECHELON
  The corps headquarters is organized, trained, and equipped to serve as the Army force in major
  operations and campaigns (with command of two or more Army divisions) with supporting theater-level
  organizations across the range of military operations. As the Army force for the joint force commander (JFC),
  the corps serves as an operational-level headquarters conducting land operations as the Service component.
  The corps normally has one expeditionary sustainment command and one medical brigade (support). Other
  theater-level assets are attached, as required. The C2 capabilities organic to the corps allow it to adapt to
  operational- or tactical-level roles, depending on the CCDR’s requirements.
  With minimum joint augmentation, the corps can function as a JTF or joint force land component
  command (JFLCC) for small-scale contingencies. When a corps is a JTF or JFLCC, a TEC’s deployable CP
  or engineer brigade can be assigned as the senior engineer organization. The corps can also serve as a
  deployable base for a multinational headquarters directing protracted operations. The corps’ flexibility allows
  the Army to meet the needs of JFCs for an intermediate land command while maintaining a set of
  headquarters for contingencies. It provides a capability that views challenges and opportunities associated
  with the operational approach and concentrates on the substance and shape of required tactical actions.
  An example of engineers supporting a theater is the USACE—Pacific Ocean Division (headquartered
  in Hawaii) being a critical enabler to help set the theater in support of the United States Army Pacific
  Command and the United States Indo-Pacific Command. The USACE—Pacific Ocean Division focuses
  more heavily toward supporting set the theater construction, though it also supports basing and infrastructure.
  The Pacific Ocean Division designs and constructs facilities for the Army and Air Force in Alaska and Hawaii
  and for all Department of Defense agencies in Kwajalein Atoll (in the Republic of the Marshall Islands). In
  support of the United States Indo-Pacific Command (USINDOPACOM) strategy, it designs and constructs
  facilities for all U.S. forces in Korea and Japan. Figure 3-2 shows an example of tasks upon which the corps
  echelon engineer builds as a foundation of operational requirements while detailing tactical-level
  requirements for a contingency.
  Legend:
  C2 command and control
  FACE forward aviation combat engineering
  Figure 3-2. Corps design considerations