text: Engineer Planning
  assist in conveying the scheme of engineer operations. In the fires section, engineers work with the fire
  support officer and other members of the staff to integrate obstacles with fire. Employing scatterable mines
  and confirming that obstacles are covered by fire are of particular interest.
  An engineer annex (normally found in annex G of the base plan or base order) is the principal means
  through which the engineer defines engineer operations to the maneuver commander’s intent, essential tasks
  for M/CM/S, and coordinating instructions to subordinate commanders. It is not intended to function as the
  internal order for an engineer organization, where the engineer commander articulates intent, the concept of
  operations, and coordinating instructions to subordinate, supporting, and supported commanders. The
  preparation of the annex seeks to clarify the scheme of engineer operations to the OPLAN or OPORD and
  includes the—
  * Overall description of the scheme of engineer operations, including approved essential tasks for
  M/CM/S.
  * Priorities of work to shape the theater or AO (not in a tactical-level engineer annex).
  * Operational project planning, preparation, and execution responsibilities (not in a tactical-level
  engineer annex).
  * Engineer organization for combat.
  * Essential tasks for M/CM/S for subordinate units.
  * Allocations of Class IV and Class V obstacle material.
  Note. Guidance to maneuver units on obstacle responsibilities should be listed in the body of the
  basic order, not in the engineer annex.
  The engineer staff officer produces the engineer overlay to highlight obstacle information or breaching
  operations. A gap-crossing operation may require a separate annex as part of the base order.
  The engineer staff officer performs as the staff integrator and advisor to the commander for
  environmental considerations. An environmental considerations appendix parallels guidance from the joint
  OPLAN, OPORD, or concept plan. (See ATP 3-34.5 for an example of an environmental appendix.) When
  dictated by specific command procedures, other staff officers include some environmental considerations in
  logistics and medical annexes. Unit planning at the brigade level and below normally includes only those
  elements required by the higher headquarters orders or plans that are not already included in a unit standard
  operating procedure. If this appendix is not written, appropriate material will be placed in the coordinating
  instructions of the basic order.
  SUSTAINMENT PLANNING CONSIDERATIONS
  Sustainment support for engineers is provided by different organizations based on various factors, such
  as the echelon of the supported unit and command and support relationships. Although engineers should be
  familiar with the sustainment organizations described in ADP 4-0, some organizations provide support to
  engineers more frequently than others.
  The engineer staff officer, engineer unit commander, supported unit logistics officer, and supporting
  sustainment unit work closely to synchronize sustainment for engineering capabilities. When the supported
  unit receives a warning order (directly or implied) as part of the MDMP, the engineer staff officer initiates
  the engineer portion of the logistics estimate process. The engineer staff officer focuses the logistics estimate
  on the requirements for the upcoming mission and the sustainment of subordinate engineer units that are
  organic and task-organized in support of the unit. Class I, III, IV, and V supplies and personnel losses are the
  essential elements in the estimate process. Close integration with the sustainment support unit can simplify
  and accelerate this process using the automated systems logistics status report to ensure that the sustainment
  support unit is able to maintain an up-to-date COP picture of the engineer unit sustainment requirements.
  During continuous operations, the estimate process supporting the decision-making and synchronization
  process may need to be abbreviated due to time constraints.
  The engineer staff officer uses the running estimate to determine the requirements for unit and mission
  sustainment and compares the requirements with the reported status of subordinate units to determine the