text: Appendix D
  Support Area Tenant Units
  Many of the units not staffed to control terrain become tenants within the support area.
  Support area operations are conducted by the assigned area owner. Support area
  operations do not include the mission support operations conducted by tenants within
  the support area. The support area commander will synchronize their operations with
  tenant units in the support area to prevent or minimize interference with command and
  control and support operations and to provide unimpeded movement of friendly forces;
  protection; operations to find, fix, and destroy enemy forces or defeat threats; and area
  damage control. The support area commander will have some command and control
  authority over the tenant and transient organizations within the support area for security
  and defense; this may be TACON for security and defense. This chapter provides an
  overview of support area tenant units and their capabilities.
  Note: See chapter 2, Section II, for an overview of possible MEB task-organized units and their
  capabilities.
  ENGINEER
  D-1. Engineers not assigned to BCTs are organized in capability-based units of multidiscipline combat,
  general, and geospatial capabilities. Army engineer forces operate as integral members of the combined arms
  teams and echelons above the BCT during peace and war to provide a full range of engineering capabilities.
  These capabilities are generally provided by three engineer disciplines—combat, general, and geospatial
  engineering. Table D-1 provides an overview of engineer capabilities at the brigade and battalion level that
  may be a tenant unit of the support area. For additional information on engineer operations, see FM 3-34.
  Table D-1. Engineer mission planning and capabilities
  Organization Capabilities
  Engineer Brigade • Provide command and control, plan, integrate, and employ engineer
  capabilities (combat, general, and geospatial engineering) in support of
  division, corps and theater areas of operations.
  • Oversee contract construction, labor, and indigenous personnel.
  • Plan and supervise terrain analysis and topographic operations.
  • Decoy emplacements (if necessary field expedient decoys/on-site
  fabrication).
  Engineer Battalion • Provide command and control, plan, integrate, and employ up to 5 task
  organized companies, one forward support company.
  • Coordinate engineer support, subunit task organization, and resource
  management.
  • Plan and support mobility, countermobility, and survivability operations.
  • Plan and supervise the collection of engineer related information and
  development of engineer information.