CHAPTER 2
Fundamentals of Engineer Operations
BATTLE COMMAND/C2
- Is the art of battle decision making and leading and motivating soldiers and their organizations into action to accomplish missions at the least cost to soldiers.
- Includes visualizing the current state and desired future states and then deciding on how to get from one to the other.
- Demands that leaders position themselves where they can best command without depriving themselves of the ability to respond to changing situations. The commander must be able to go where he can best assess the operation and risks and make the necessary adjustments. Command¯the art of motivating and directing soldiers¯must be supported by the means needed to regulate the forces to achieve the commander's intent. However, commanding, decision making, and problem solving that come with it are not done in isolation. The commander's staff and subordinates assist in developing, modifying, and improving COAs and in developing future COAs for events that are not totally clear. Commanders make estimates of future operations and assessments of the current situation to determine their own intent and formulate the concept of operation. Prioritizing actions and considerations for the acceptable degree of risk guides the commander in determining the amount of control he can, and should, delegate to others to synchronize actions across the AO.
Control is inherent in battle command. It is monitoring the status of organizational activities, identifying deviations from the commander's intent, and regulating the forces and means toward an intended aim. Commanders apply means to accomplish their intent. Ultimately, commanders provide methods to measure, report, and correct performance. Control serves its purpose by allowing the commander the freedom to operate, delegate authority, and lead from any critical point on the battlefield while synchronizing actions throughout his AO.
The process of controlling an organization is directed towards ensuring that all of the pieces pull together, adjusting as the situation dictates but never losing sight of the intended end state and purpose of the mission¯the commander's intent. Battle-command systems must support the ability of the commander to adjust plans for future operations, even while focusing on the current fight. Skilled staffs work within the commander's intent to direct and control units and allocate the means to support the intent.
COMMAND AND SUPPORT RELATIONSHIPS
COMMAND
Attachment
- A subordinate maneuver commander needs task organization or direct-command authority over engineer units.
- Time, distance, or communications prevent the parent engineer HQ from providing adequate logistical support.
- The above factors keep the parent engineer unit from making timely command decisions. Engineer units attached in this manner often need an accompanying support slice from logistics elements. The attachment must occur early to enable full integration into the maneuver force.
Operational Control
Operational Command
SUPPORT
Direct Support (DS)
General Support (GS)
TASK ORGANIZATION
The maneuver commander gets a better response when the engineer battalion, company, or platoon is under his direct control. He determines the task organization and gives missions directly to the engineer elements under his control. He gets quicker results but at the cost of decreased engineer flexibility to the higher maneuver commander.
Whether engineers are in a command or a support relationship to a maneuver HQ is a balance between the needs of the higher commander or the subordinate commander. The former needs engineers for flexibility and the most efficient use of scarce engineer assets. The latter needs engineers for responsiveness and the ability to task-organize his forces. Army operations doctrine requires subordinate commanders to seize the initiative whenever they can.
Normally, the corps commander provides each committed division with a corps combat-engineer group in a command relationship. Additional corps engineers are usually in a support relationship. The heavy division engineer brigade can then task-organize and provide adequate engineer support to its committed maneuver brigades while additional engineers accept missions in the division's rear. Divisions allocate engineers in DS to those brigades not in contact. For maneuver brigades already in contact, or when contact is imminent (maneuver commander flexibility is vital), the division should allocate engineer battalions in an attached or OPCON status. The brigade engineer, in turn, can provide engineers directly to his battalion task forces (TFs) only when he receives the engineers from the division in a command relationship. Otherwise, the engineer commander determines the deployment of his subordinate elements.
PERSPECTIVE:
Lieutenant Colonel Thomas Riggs, 81st Engineer Combat Battalion, received orders from the 106th Infantry Division to establish a line east of St Vith and hold off the Germans. He rounded up all available men of the 81st and 168th Engineer Combat Battalions and managed to hold off the Germans until 21 December when they broke up into small groups and attempted to make their way back to St Vith. Colonel Riggs was captured, but he escaped to Poland and fought with the Russians until he returned to his unit in April 1945.
CONTROL
The maneuver commander at each echelon uses his HQ to control combat operations, but he relies on engineer C2 elements to ensure that engineer units successfully execute the tasks that he assigns to them. Engineer C2 elements consist of the engineer member of the maneuver commander's battle staff, subordinate engineer unit commanders, and the staffs of those subordinate units.
USE OF ENGINEER HQ
Commanders task-organize engineer units based on their estimate of the situation. An engineer company can command up to two additional engineer platoons. An engineer battalion can command up to five engineer companies. These can be a mixture of corps and divisional elements operating under either a corps or a divisional engineer HQ.
An engineer HQ often functions as a combined-arms HQ. An engineer platoon can incorporate tanks with mine plows for a breaching mission. An engineer company might be the breach force for a TF deliberate breach and have an attached tank platoon and attached mechanized infantry platoon. An engineer battalion might be the breach force for a brigade deliberate breach and have an attached tank/mechanized company/team plus air-defense assets. A division engineer brigade may have a special role in a major river-crossing operation and have attached to it a large number of military police, chemical, and intelligence units, as well as engineer units.
The engineer command (ENCOM) uses the theater contract construction agency (CCA) elements to provide contract construction and real estate operations. The CCA has area familiarity and habitual relationships within the theater and often maintains a forward presence in the area before contingency operations. USACE forward's (Fwd's) structure and capability are provided in theater. USACE may have a small HQ staff for controlling of one or more area offices and other dispersed teams while also maintaining communications to the parent HQ for technical and administrative support purposes.
Engineer Command
Theater-construction management often spans multiservice requirements. The unified or specified commander (commander in chief [CINC]) may direct establishing a regional contingency-engineering manager (RCEM) to control all theater-level engineering. The ENCOM can perform this role if the CINC designates the ASCC as the RCEM and the ASCC designates the ENCOM as its agent. An ENCOM may deploy by increments to meet highly variable work loads and situations.
Theater Army (TA) Engineer Brigade
Corps Engineer Brigade
Engineer Group
Division Engineer Brigade
Division Engineer Battalion
Engineer Company
Engineer Platoon
ENGINEER COORDINATION
Area Assignment
Task Assignment
ENGINEER INFORMATION FLOW
Unit Status
Mission Status
Terrain Information
Army Battle Command System (ABCS)
Control
- A clear intent that encompasses why the engineer operation is necessary to support the force commander.
- An achievable end state.
- A statement of how the engineers will achieve the mission. At the highest level, the concept of the operation provides a focus for all operations and extends the commander's intent throughout the entire force. Orders at high levels will normally assign broad missions, control measures, and assets. At the lower levels, commanders will assign specific tasks that align with the concept of the operation and its control measures, using the assets provided above. Orders must promote initiative and innovative solutions and allow for exploitation of success.
ROLES OF ENGINEER COMMANDERS AND STAFF ELEMENTS
ASCC ENGINEER
CORPS ENGINEER
The brigade commander has a staff element located in the corps's command posts (CPs). This staff is under the direction of the assistant corps engineer, who integrates engineers into the corps's planning process. The assistant corps engineer provides advanced warning of future corps operations through engineer channels to the corps engineer brigade, division engineer brigade, separate brigades, and armored-cavalry-regiment (ACR) engineer companies. He receives reports from these levels to keep the corps staff informed on current engineer operations.
DIVISION ENGINEER
To assist the commander in his role as a special staff officer, the division engineer has a staff element located in the division's CPs. It is under the direction of the ADE, who integrates engineer operations during the division's planning process. The ADE provides advanced warning, through engineer channels, of future division operations to the division and supporting corps engineer battalions and to the maneuver brigades. He also receives reports from these levels to keep the division staff and the corps engineer informed on current engineer operations in the division.
With the assistance of his staff, the division engineer controls corps units in the division area. The ADE passes division taskings to corps engineer units on behalf of the commanding general (CG).
BRIGADE ENGINEER
BATTALION/TF ENGINEER
When additional engineers operate with the TF, the normally associated company commander remains the TF engineer. However, the other engineer unit commander and his staff assist in detailed planning.
ENGINEER ECHELON ARCHITECTURE
ORGANIZATIONAL PRINCIPLES
Task-Organize Engineer Forces to Requirements
Give Priority to the Main Effort
Integrate Engineers with Maneuver
and Fire
Ensure That Current Engineer Operations Promote Future Force Operations
Do Not Hold Engineers in Reserve
Build a Logistically Sustainable Force
Maintain Effective C2
Use All Local Resources
ORGANIZATION OF THE THEATER
Engineers are always required in a TO. This force must be carefully tailored to its mission, well planned and well rehearsed. Contingency operations need a greater proportion of engineers than normal to support the force.
COMMUNICATIONS ZONE
Requests for engineer missions pass from an area support group (ASG) to the engineer group in GS or from a TAACOM to the engineer brigade in GS. The engineer group or brigade assigns missions based on the priorities that the ASCC directs. Engineer units in the COMMZ execute the missions under control of the ENCOM structure. Only in an emergency might an ASG commander have OPCON of engineer units in his area to fight the rear-area threat.
Tactical Operations
Construction
Engineer combat battalions, heavy, have a variety of equipment, tools, and skills to do all types of construction. Some types, such as asphalt paving, require help from separate engineer companies and teams. Construction-support companies operate and maintain specialized construction equipment to augment the combat battalions, heavy.
Dump-truck companies provide additional haul assets. Pipeline-construction support companies provide technical personnel and special equipment to support pipeline construction and related facilities. Port-construction companies provide technical personnel and special equipment for constructing and restoring ports; logistics-over-the-shore (LOTS) facilities; inland waterway facilities; and petroleum, oils, and lubricants (POL) marine terminals.
Topographic Engineering
- Supports noncorps units at the theater level.
- Assists the DS companies in the corps's areas.
- Is normally located with the battalion HQ, but it may send elements to other locations, such as the echelons above corps (EAC) intelligence center.
Real-Property Maintenance Activities
Configuring engineer units to support the ASGs is based on the expected RPMA work load. They are tailored to the specific ASG that they will be supporting to accomplish RPMA missions.
RPMA may be administered on a centralized or decentralized basis. If decentralized, the TAACOM, through its ASGs, uses supporting engineer teams, USACE contracted RPMA engineering service, or HNS to accomplish it. ASGs have small cells to receive, prioritize, and coordinate engineer-support requirements. They assess work loads, sequence critical requirements, and request assistance from the engineer group in GS.
Many specialized engineer teams can be tailored to the needs of a particular ASG and support it under an engineer C2 HQ team. Except for the specialized teams assigned to the ASG, the engineer group has control of all engineer units in its assigned area. The ENCOM can also administer RPMA on a centralized basis. FM 5-116 contains more details on engineer operations in support of RPMA.
CORPS'S AREA
TACTICAL OPERATIONS
In the corps's area, some of the missions are to provide guidance to units on protective shelters and camouflage measures. The major engineer commitment, however, is to keep the LOCs and tactical march routes open to sustain the committed forces, shift other forces, and implement corps-directed attacks. This requires continuous damage repair caused by enemy action, heavy traffic, and the weather.
Corps combat-engineer battalions perform most of these tasks. Combat-support equipment companies augment the combat battalions with equipment to move earth and maintain horizontal surfaces such as roads and airstrips. The combat battalions also assemble tactical bridges provided by panel-bridge companies or allocated from theater stocks for use on LOC and other routes. Medium-girder-bridge (MGB) companies erect their own tactical bridges.
The engineer brigade also has float-bridge assets for river-crossing operations. Ribbon-bridge (RB) companies transport, assemble, and operate ribbon rafts and bridges during river-crossing operations. Other float-bridge companies provide different types of bridging for longer-term use at the crossing sites. Combat battalions also assemble these float bridges.
The light corps combat battalions and the light-equipment companies reinforce the light division engineers, particularly during their initial deployment. The airborne corps battalion can parachute into an operational area and construct an assault airstrip. The light equipment company augments light forces with additional earth-moving equipment.
The separate brigades and the ACRs have an organic engineer company, which is usually not sufficient to handle all of the engineer tasks required when they are committed to combat. The corps engineer brigade reinforces these organizations and additional combat battalions and separate companies as determined by the mission and situation.
CONSTRUCTION
To facilitate the forward focus of these corps engineer assets and to accomplish the myriad of tasks beyond the corps engineer's capabilities, operational-level engineers work within the corps's area. Control measures such as engineer work lines (EWLs) delineate areas of responsibility and are positioned as far forward as practical. EWLs are, therefore, independent of other boundary control measures, such as the corps's rear boundary, allowing operational-level engineers to concentrate on forward efforts critical to the close fight. Finally, the theater augments all its corps by assuming responsibility for specific support on a task basis forward to the EWL, again releasing corps construction units to engage in activities far forward and of immediate concern to the corps commander.
TOPOGRAPHIC ENGINEERING
REAL-PROPERTY MAINTENANCE
DIVISION AREA
TACTICAL OPERATIONS
Each committed brigade normally needs the equivalent of an engineer battalion or one engineer company per battalion TF. This level of engineer support is adjusted based on the mission, enemy, terrain, troops, and time available (METT-T) analysis.
Additional corps battalions operate in the division on an area or task basis. Separate engineer companies, especially bridge companies, operate in the division as needed. When the division has the priority and need for a large contingent of corps engineers, it will often have an entire engineer group with it. When allocated to a division, the group HQ controls all engineer operations in the division's rear area. It allocates and controls engineer forces and resources for selected tasks in the maneuver brigade's areas. It may be a planning-and-control HQ for engineer tasks affecting the entire division, such as a divisional assault river crossing or a deliberate breach.
TOPOGRAPHIC ENGINEERING
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