US ARMY INTELLIGENCE CENTER AND SCHOOL SO
Student Outline TCDGXX
MAR 95

COURSE OF ACTION DEVELOPMENT, DEFENSE

1. Objective. Identify the steps of Course of Action Development and determine feasible courses of action given an intelligence estimate, maps, and overlays. With references, each student must achieve standard in accordance with graduation criteria.

2. DEVELOPMENT:

a. Purposes of the Defense: The Commander's intent and the why in the mission statement should be phrased in terms of these purposes.

(1) Defeat an enemy attack.

(2) Gain time.

(3) Concentrate forces elsewhere

(4) Control key or decisive terrain.

(a) KEY TERRAIN

(b) DECISIVE TERRAIN

(5) Wear down the enemy

(6) Retain strategic, operational or tactical objectives.

b. Battlefield Framework

(1) Deep Operations

(2) Security Area

(3) Main Battle Area

(4) Reserve Operations

(5) Rear Operations
c. Defense. Conducted to defeat an enemy attack, gain time, concentrate forces elsewhere, control key decisive terrain, wear down the enemy, or retain strategic, operational, or tactical objectives..

d. Forms of DEFENSIVE Operations: Conceptual statements. Focus on retention of terrain or destruction of the enemy.

(1) MOBILE DEFENSE:

(a) Focuses on Destruction of enemy force

(b) Surrender terrain to destroy enemy at the place of
choice.

(c) Uses Reserve forces to counterattack and destroy enemy

(d) Usually conducted by heavy forces (because of their
mobility)

(e) Mobility - must be the same or better than the enemy's

(f) Subordinate units participating in a mobile defense, may conduct an Area Defense, a Mobile Defense, or a retrograde.

(2) AREA DEFENSE:

(a) Retain terrain (Key or Decisive)

(b) Formed by interlocking, mutually supporting Battle Positions and/or Strongpoints

(c) Uses a small mobile reserve for counterattack.

(d) May be conducted by heavy or light units

(e) Heavy use of Engineers in Countermobility and survivability roles.

(3) RETROGRADE OPERATIONS: Is a movement to the rear or away from the enemy. Such an operation may be forced or voluntary but must be approved by higher commander.

(a) Delay. An operation conducted when the commander needs to trade time for space to concentrate or withdraw forces, to establish defenses in greater depth, to economize forces in an area, or to complete offensive operations elsewhere. In the delay, the destruction of enemy forces is secondary to slowing his advance to gain time. (See FM 101-5-1 pp 1-23 thru 1-24).

(b) Withdrawals. A retrograde operation in which a force in contact with the enemy frees itself for a new mission. To remove units from combat operations to adjust defensive positions, relocate forces, or relieve forces with fresh troops. Withdrawal may or may not be under pressure or voluntary

(c) Retirement. Operation conducted while not in contact with the enemy. Movement to the rear conducted as a road march.

d. Defense of a Sector:

(1) Sector is the name we give to the AO for a DEFENSIVE mission.

(2) Defense in sector is the most common form of defense for Bdes and Bns because it provides the least restrictive environment and maximum flexibility for defensive operations.

(3) The size of the sector is based on METT-T
Bde sector = approx. 10-16 km wide x 16-24 km deep

(4) Oriented on most likely enemy avenues of approach.

Used when:

and freedom of action to his subordinate commanders.

(5) Brigade Commander shapes the battle within his sector based on:

(a) Defensible terrain. (IPB plays a key role!)

(b) Where he intends to defeat the enemy

(c) Coordination with adjacent units

(6) Planning Considerations:

(a) Assign sectors, battle positions (BP) or strongpoints

(b) Provide adequate maneuver space, defensible terrain

(c) Engagement areas (EAs), Target reference points (TRPs)

(d) Integrate fire support and obstacles into the scheme of maneuver.

(e) Position security forces forward of FEBA (scouts)

(f) Establish control measures

(g) Establish priority of movement (if mobile defense)

e. Defense of a Battle Position(s)

(1) Most common type of defense for companies.

the flanks of the BP.

(3) When a commander maneuvers his forces outside the Battle Position, he:

* Notifies his higher HQ

(4) Used when:

and rear to fires from units within the SP.

(5) Can be established in isolation when tied to

restrictive terrain or tied to defensive positions on their flanks.

h. Engagement Criteria.

(1) Used to synchronize/control fires into EAs.

(2) Visual criteria usually given, for example: "Open fire when the first ten enemy vehicles have passed TRP 3."

i. Disengagement Criteria.

(1) Used during retrograde operations to BREAK CONTACT with the enemy, for example: "Co. A pull back when 10 vehicles pass TRP 3; Co. B pull back when Co. A reports he is in position or when 20 enemy vehicles cross TRP 4."

(2) The commander must establish priorities for movement on routes during repositioning, disengagement, or counterattacks.

j. Graphic Control Measures.

(1) Boundaries
(2) Coordination Points
(3) Phase Lines
(4) Battle Positions
(5) Strongpoint
(6) Contact Point
(7) Check Point
(8) Route
(9) Lane
k. Periodic Summary:

(1) Review of major points:

(a) Purposes of the defense.

(b) Forms of defensive operations.

(c) Defense of a Sector.

(d) Defense of a Battle Positions.

(e) Strongpoints

(f) Engagement Areas.

(g) Engagement and Disengagement Criteria

(h) Graphic Control Measures

(2) Questions or Comments.

3. COURSE OF ACTION DEVELOPMENT:

a. Definition. A course of action is a possible plan open to the commander that would accomplish the mission. (ST 100-9, pg. 3-1)

b. Course of Action Development is a 6 step process. These steps are:
Step 1. Analyze Relative Combat Power.
Step 2. Generate Conceptual Possibilities.
Step 3. Array Initial Forces.
Step 4. Develop Scheme of Maneuver.
Step 5. Determine Command & Control Measures.
Step 6. Statement & Sketch.

c. Areas considered in course of action.

(1) Who (What type of unit - Mech Heavy TF, Armor Hvy TF, Light Inf Bn, etc.)
(2) What. Conducts "what" type of mission.
(3) When. Conducts an attack along Axis Thunder at 240500March 96.
(4) Where. Define Axis for attack and Sector for defense.
(5) How. Define concept of operation and defeat mechanism.
(6) Why. Refer to the Commander's Intent.

d. COA derived by "brainstorming." During brainstorming, the G3/S3 should:

(1)

(2)

(3) Also consider

(a) Principles of War. Objective, Offensive, Mass, Economy of Force, Maneuver, Unity of Command, Security, Surprise, and Simplicity.

(b) Army Operations imperatives. Initiative,Agility, Depth, Synchronization, and Versatility.

(c) Essential tasks.

(d) Commander's guidance.

(e) Future orientation.

(f) Effective use of command and control.

(g) Use of nuclear/chemical weapons by either side.

e. Differences in Courses of Action:

(1) Use of Reserves

(2) Task Organization

(3)

(4)

(5) Scheme of Maneuver

e. Screening Criteria:

(1)

(2)Eliminate COAs that do not meet the commander's intent.

(3)

f. Steps used to develop a course of action. (ST 100-9, July 94, pgs. 3-1 through 3-8 )

Step 1. Analyze relative combat power and Array initial forces.
"Relative Combat Power is the overall relationship of the Combat Power of friendly versus enemy forces."

(a) FM 100-5 defines combat power as the effect created by combining the elements of maneuver, firepower, protection, and leadership in combat against the enemy.

(b) By analyzing relative force ratio's and determining and comparing each forces most significant strengths and weaknesses as a function of combat power, the planner can gain some insight into --

o Friendly capabilities pertaining to the operation.
o What type operations may be possible from both friendly and enemy perspectives.
o How and where the enemy may be vulnerable.

(c) To compute relative combat power, use the values listed in , Appendix 1, US vs. Krasnovian Unit ComparisonValues. Relative combat power values are also listed in ST 100-9 for elements larger than unit level.

(d) Demonstration on Computing Relative Combat Power Computations:

3D BDE
TF 1-156 AR
A/156 IN (M)
3d BN, 9ID (L)

TF 1-156 AR 3 X M1A1 CO @ 3.2 = 9.6
1 X M2 CO @ 2.0 = 2.0
TOTAL = 11.6

3d Bn, 9ID (L) 3 x LT COs @ 1.0 = 3.0
TOTAL 3.0

Total Force Relative Combat Power = 14.6 X 90% = 13.14

130 MRD ECHELON
11 MRR (BMP) 1
191 MRR (BMP) 2
48 MRR (BTR) 1
1 TR 2

MRR (BMP)
9 BMP CO X 1.5 = 13.5
3 TNK CO X 1.9 = 5.7
1 AT CO X 1 = 1.0

REL. C.P. MRR (BMP) 20.2

MRR (BTR)
9 BTR CO X 1 = 9.0
3 TNK CO X 1.9 = 5.7
1 AT CO X 1 = 1.0

REL. C.P. MRR (BTR)15.7

TR
9 TNK CO X 1.9 = 17.1
3 BMP CO X 1.5 = 4.5

REL. C.P. TR 21.6

1ST ECHELON

MRR (BMP) 20.20
MRR (BTR) 15.70

TOTAL 1ST ECHELON C.P. = 35.90

TOTAL 1ST ECHELON X 60% Strength = 21.54

2D ECHELON

MRR (BMP) 20.20
TR 21.60

TOTAL 2D ECHELON C.P. = 41.80

TOTAL 2D ECHELON X 75% Strength = 31.35

TOTAL C.P. MRD = 52.89

(9) Determine Force Ratios.

-One Side must always equal 1 (Defender).
-U.S. Forces always on the left.
-Divide the ratio by the smaller number, for example:
52.89/13.14 = 1 : 4.02

(10) Interpret Ratio.

- Ratio is worst acceptable case
- At 1:3 we can ___________ in prepared positions.
-
-

(11) Evaluate the results.

- Enemy doctrine = 1:6 to absolutely succeed.
_ Ratio of 1:1.9 may imply a _______________ or that the enemy will seek local superiority. ___________________________ ______________________________________________________________
- Ratios may indicate main or supporting attack.

(12) Conclusion.

Practical Exercise, Requirement 1.

Instructions.

1. Command Estimate (CE) II builds off of the lessons covered in CE I. You will use the same maps and scenario throughout CE II until you begin the Processing Exercise.

2. Compute the relative force ratio for your brigade. Use the most likely ECOA you developed in CE I. (Use the doctrinal situational template you developed as you encounter threat forces along the FEBA.)

3. Facts:
A. Friendly forces are at 90% strengths.
B. Enemy force strength is IAW the Intelligence Estimate.

Step 2. Generate Conceptual Possibilities.

Brainstorming is the preferred technique for generating conceptual possibilities. While brainstorming, the staff must not judge or eliminate any idea. They must remain unbiased and open-minded.

The commander must decide on the number of COAs to develop and which enemy COA to address as well as the priority for addressing them. The XO must comply with the commander's guidance about specific COA. He must also prevent the common pitfall of presenting one good COA among several "throwaway" COAs.

Once the staff has explored each concepts possibilities, they can then examine each to determine if it satisfies COA selection criteria -- changing, shelving, adding concepts, as appropriate.

Step 3. Array Initial Forces

Determine the necessary forces to accomplish the mission. In doing so, consider the following:

- Mission and Commander's Intent.
- Consider Avenues of Approach and Axis of Attack.
- As many ECOAs as time permits, typically starting with the most probable. - -

(1) Determine Size of Units to be Arrayed. (Two Levels down from the Planning Headquarters Level.) Using Appendix 2,Planning Ratios for the Array of Friendly Units in your student handout, determine the size of the units to be arrayed. During this step, consider terrain and mission, but not weather, initiative, surprise, or intangibles such as leadership, morale, training, and skill.

(2) Determine a Proposed FEBA. Higher headquarters indicates the desired FEBA and LD/LC for the proposed mission.

-Evaluate Defensible Terrain

-Validate FEBA

(3) Array the Initial Forces.

-Emplace size of unit, not ________.
-Made without regard to ___________.
-Emplace generic forces ______ levels down.

(4) A Completed Array Identifies:

- Total number of units required to be allocated.
- _____________ (# Required vs. # Available)
- Additional Forces
- Base Knowledge (Economy of Force vs. Accepting Risk)
- Alternate methods of dealing with the enemy __________ ______________.

Practical Exercise, Requirement 2.

Instructions:

1. Array generic forces (both threat and friendly) in your area of operation/area of interest. Do not assign identities! Assign generic forces based on Mobility Corridor and Avenue of Approach analysis.

2. Determine total number of units required to be allocated.

3. Identify shortages and additional forces needed.

4. If necessary, determine alternate methods of dealing with the enemy scheme of maneuver.

Step 4, Develop the Scheme of maneuver.

Definition. The scheme of maneuver is the description of how forces will accomplish the commander's intent.

(1). In developing the scheme of maneuver, you must:

- Reevaluate enemy/terrain.

- Reevaluate ______________________.

- Consider shortages and uncommitted forces.

- Determine _______________________________________.

- Determine location of CATK, OBJs, EAs, and Axis of Attack.

***G2/S2 MUST REDUCE RISK!!!

(2). Reevaluating Terrain and Enemy.

(a) Terrain. Determine unrestricted, restricted, and severely restricted terrain. Determine whether it is best suited for mechanized forces or light forces.

(b) Enemy. Reevaluate threat doctrine, force ratios, risks, defeat mechanism, and the threat objectives.

(c) Convert Generic Forces.

-The initial step in identifying task organization of the unit. (Final decisions will be made during wargaming.)

Practical Exercise # 3

Instructions

1. Reevaluate terrain and make adjustments as appropriate.
2. Assign identities to threat forces, template battalion and regimental boundaries, and designate headquarters elements.
3. Develop friendly defensive plan.
4. Analyze relative combat power ratio by mobility corridor.
5. Analyze relative combat power ratio for 1st Echelon Forces (maneuver units only).
6. Analyze relative combat ratio for 2nd Echelon Forces (maneuver).
7. Analyze relative combat power ratio for supporting elements.
8. Do steps 5 and 6 with relative combat power for supporting elements added. Compute new relative combat power ratio for steps 5 & 6.
9. Compare relative combat power ratio with supporting elements added. What conclusions can you make?

Step 5. Determine Command and Control Means and Maneuver Control Measures.

(1) Command and Control. Planners determine command and control means over maneuver units. Planners determine C2 means by allocating headquarters over the forces (task organization).
A MSC controls at least two subordinate headquarters but normally not more than five.
(2) Maneuver Control Measures. Control measures synchronize combat power at the decisive points while minimizing the command's exposure to potential fratricide. Minimum required control measures include boundaries, not splitting avenues of approach, and they must be identifiable. Examples include:

Cover:___________________________________________

Clearly and briefly state the purpose:_______________
_______________________________________________________________.

Statement provides the ________.

Sketch is _____________________.

(3) The sketch should include planning headquarters and MSC unit boundaries; allocated forces, which help provide a clearer picture of the scheme of maneuver; and control measures such as -

- Avenues of Approach (Ground & Air)
- Major terrain features
- Major obstacles
- MSC unit boundaries
- Control Measures -
- Zones of attack or defense
- Sectors
- Assembly Areas
- Strongpoints
- Battle positions
- Objectives
- Engagement Areas
- FEBA and LD
- Main Effort for offense
- Allocated Forces

(c) Decision Graphics. Provide a generic picture of the statement. The sketch will probably be an acetate overlay on the operations map or a drawing on plain paper for use by other staff officers. Decision graphics include:

-Control Measures
-Allocated Forces
-Orientation on the terrain

The important point to remember is that the combination of a course of action statement and a course of action sketch must provide a clear picture of HOW the unit will defeat the enemy. Additionally, it must:

- specifically explain the scheme of maneuver by outlining how generic major subordinate commands accomplish the mission.

- Identify the main effort and the supporting efforts

- Identify significant risk developed during the process

Course of Action Analysis & Comparison.

(1) Committed Forces. "A force in contact."

(2) Evaluating Force Ratios. Example: At the brigade level, count the maneuver units from the first echelon battalions of the first echelon regiments.

(a) Committed Forces - Who to count:

- ___________________________________________
- ___________________________________________
-Force in Contact.
-Force deployed on a specific mission or Course of action that precludes its employment elsewhere.
-Maneuver (MR/Tank/Recon - in your sector)
-By Echelon (2 levels down)

(b) Enemy Maneuver Forces

- Friendly division counts: ________________
___________________________________________________________.

- Friendly brigade counts: ________________
___________________________________________________________.

- Friendly battalion counts: ________________
___________________________________________________________.

(3) Evaluate Shortages.

(a) Equipment/Maneuver Forces:

(b) Supplies:

(c) Use of forces Uncommitted:

(4) Evaluate Risks.

- Based on S-2 analysis: ______________________
__________________________________________________________

(5) Evaluate Types of Operations.

(a) Mission Analysis, ____________________________
_____________________________________________________________.

(b) Subordinate units mission.

(c) Types of missions: ___________________________
_____________________________________________________________.

(6) Develop friendly graphics and a Situational Template (SITEMP) for each FCOA and ECOA.

(7) Determining a defeat mechanism.

"What will cause his attack to fail."

-Examples of a Defeat Mechanism:
(a)

(b)

(c)

(d)

-Expressed using four elements:

-How do we force the enemy to comply?

(8) Determining the Location of Objectives and Counterattack Objectives.

(9) Determining the Location of the Main Effort

-Main Effort

-

-

-

(10) Utilize Combat Multipliers.

(a) Tangibles. Attack Helicopters, __________________ ______________________________________________________________________________________________________.

(b) Intangibles. ____________________________________
________________________________________________________________.

-Reserve
-
-
-
-Attack Mission (Engagement Area)
-Consider Fire Support and Other support.

-
-
-
-Engineer, ADA, MI support, etc.

(11) Analyze Combat Power by one of three ways:

(a) AVENUE

(b) BELT

(c) BOX

DEFINE THE BOX (CRITICAL AREA) COUNT COMMITTED ENEMY COMPUTE ENEMY RELATIVE COMBAT POWER COMPARE TO RATIO FOR FRIENDLY MISSION (DIVIDE)
COMPUTE FRIENDLY CURRENT COMBAT POWER (for M1 and M2 units) SATISFY THE RATIO

Practical Exercise, Requirement 4

Instructions

1. Applying the six step COA Development lesson. Develop three FCOA and three ECOA sketches and statements.
2. Prepare the COA briefing using the Course of Action Briefing Format on page 6-19 in ST 100-9.

APPENDIX 1

US vs SOVIET UNIT COMPARISON VALUES (for Small Units)

U.S. FORCES SOVIET FORCES

M113 MECH CO 1.5 BTR CO 1.0
M2 MECH CO 2.0 BMP-1 CO 1.5
BMP-2 1.6

M1 TNK CO 3.O TANK COs
M1A1 TNK CO 3.2 T-80 2.1
M60 TNK CO 2.8 T-64 1.9
T-72 1.7
T-62 1.1
T-55 0.9

M901 (AT) CO 1.5 AT BTRY (AT-3/5) 1.O
AT BTRY (T-12/SPG-9) 0.5

ACR TROOP (M1/M3) 2.8 RECON CO (TNK/BMP) 1.7
DIV CAV TROOP (M3) 2.5 RECON CO (BRDM) 0.2

ATK HELI CO(AH-64) 4.O ATTACK HELI CO 2.O
ATTACK HELI CO(AH-1) 3.O
AIR CAV TROOP 3.O

FIELD ARTILLERY

FA BN 2.0 FA BN 2.0
MLRS BTRY 2.0 MRL BTRY 1.0

NOTES:
1. The above table is based on analysis of the unit using the BTR company as a base unit.

2. As a G3/S3 or commander, you could develop your own table. The comparison of relative combat powers should be based on the current intelligence available and experience.

3. The number and quality of the major weapon systems in the units listed were used to arrive at the subjective values shown in the table.

4. Exclude from consideration forces at echelons lower than the echelon of concern, i.e. DIV/BN, BDE/CO BN/PLT. The MRB (BTR has an AT PLT, BN would consider it, BDE ignore it).

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5. Use this table for calculation of platoon values by considering platoons at the same value as companies. M1 Co = 3 compared to a T-80 Co = 2.1; If an M1 Platoon is compared to a T-80 Platoon, then M1 Plt = 3 and T-80 Plt = 2.1. Div M3 Troop = 2.5, then Scout Platoon = 2.5 when compared to other platoons.

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SAMARAN VALUE TABLE

SAMARAN REGULAR ARMY FORCESGOVERNOR GENERAL'S VANGUARD

TANK CO (T-72) 2.0 TANK CO 3.0

INF CO (LIGHT) 0.2 INF CO (LIGHT) 0.4

COMMANDO 0.4 COMMANDO 0.5

MECH CO (M113) 1.0 MECH CO (M113) 1.2

MECH CO (BMP) 1.5 MECH CO (BMP) 1.8

AT GUN CO (SPG-9) 0.5 AT GUN CO (SPG-9) 0.5

ATGM CO 2.0 ATGM CO 2.0

ATGM PLT 0.5 ATGM PLT 0.5

RECON CO 1.0 RECON CO 1.5

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APPENDIX 2

PLANNING RATIOS FOR THE ARRAY OF FRIENDLY UNITS

Friendly MissionFriendly: EnemyNotes

Delay 1:6

Defend 1:3 Prepared or
Fortified

Defend 1:2.5 Hasty

Attack 3:1 Prepared or
Fortified

Attack 2.5:1 Hasty
position

Counterattack 1:1 Flank

NOTES:
1. Other operations such as pursuit, exploitation, and movement to contact require no particular ratio; however, for planning, a ratio of 1:1 can be used.
2. These ratios consider terrain and mission but not weather, initiative, surprise, logistics, or combat effectiveness intangibles (leadership, training, morale, and skill).

3. Historical experience has shown that a defender has approximately a 50-50 probability of successfully defeating an attacking force approximately three times his equivalent strength. The defender has many advantages: full use of cover and concealment, selection of the ground on which to fight, weapons sighted for maximum effectiveness, choice of firing first, and use of obstacle value of the terrain.

4. ENEMY NORMS: Enemy norms indicate that, at the tactical level, the attacker must possess a 5-to-1 or 6-to-1 ratio of combat power to be successful.

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PLANNING GUIDE FOR LEVEL OF UNIT TO BE ARRAYED

Planning level Avenue Size Array Forces
_________________________________________________________________
Corps Division Brigades

Division Regiment and Battalion
Brigade

Brigade Battalion Company

Battalion Company Platoon

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APPENDIX 3

WARGAMING

The following technique of wargaming is based on analyzing relative combat power using one of the three wargaming methods recognized by the Army: Avenue, Belt, Box.

1. AVENUE IN DEPTH: This looks at all of the enemy expected on a single mobility corridor or avenue. A version of this method was used to analyze relative combat power in step one. A Brigade might look at a single battalion avenue at a time, estimate the percent of strength of each successive enemy echelon or defensive belt encountered. The S3 would estimate own percent of strength, then compare relative combat power to the first enemy echelon or belt to ensure that he has an appropriate force ratio. At this point he estimates friendly percent of strength as he assumes it will be after this first engagement and compares relative combat power of his force and the next enemy belt or echelon to ensure that he still has a sufficient force ratio.

2. BELT: This method looks at the force ratio across the entire front a single point in time. It would be appropriate in the offense if attacking on a broad front or in defense for checking ratios at successive defensive belts provide the situation had not changed significantly, or for considering the activities of a force operating across the entire front such as a guard force. The S3 looks at the enemy situation and percent of strength at a single friendly or enemy defensive belt; he considers his own percent of strength and computes a force ratio for all committed forces.

3. BOX: The box method is recommended for use at this phase of course of action development. It is used to consider a the situation one mobility corridor or avenue of approach at a time for a single belt of committed forces -in essence we mentally draw a box around the forces we want to consider. The S3 when using this method is answering the question: Will there be enough friendly combat power at this place at this point in time to accomplish the mission? He uses this to check his initial array. He considers the situationally templated enemy and the enemy's percent of strength for committed forces. He computes their relative combat power. He compares this to the ratio appropriate to the mission -for instance, 1:3 for a friendly defense from prepared positions. In this case, he would divide enemy relative combat power by 3. This will tell him the minimum amount of friendly relative combat power he must have in the area to defend. By reducing the relative combat power of his own units by their percent of strength, he can estimate the number and type of units he will need in the area.

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4. COMMITTED FORCES: FM 101-5-1 defines committed force as "a force in contact with an enemy or deployed on a specific mission or course of action which precludes its employment elsewhere." The first part of the definition is simply units within direct fire range having a line of site to each other. We have already discussed why these units cannot be used as reinforcements, why they will have a hard time breaking contact. Where they are is known; they would have to break contact in order to surprise us elsewhere. The second part of the definition is more difficult. We know our own mission, but not the enemy's. So, we consider the enemy by our own echelon of command:

a. Division considers as committed enemy 1st and 2d echelon BNs (of 1st echelon REGTs of 1st echelon divisions).

b. Brigade considers as committed enemy 1st and 2d echelon COs (of 1st echelon BNs, of 1st echelon REGTs).

c. Battalion considers as committed enemy 1st and 2d echelon PLTs (of 1st echelon COs, of 1st echelon BNs).

d. Special Considerations:

(1) DEFENSE: Do not count as committed enemy recon, AT or Attack Helicopter units.

(2) OFFENSE: Count enemy Recon and AT as situationally templated where they will be in contact. Do not count Attack Helicopter.

NOTE:
(Use the above considerations in the schoolhouse. In the field you will look at how these units are situationally templated and if they are in contact, you will include them. Our solution in excluding them is based on the fact that normally these units will not be committed.)

e. SITEMP: Obviously, the S2 must prepare many situational templates showing the enemy in different courses of action and at different points on the battlefield to support this process.

NOTE: Enemy recon will have already passed by or been eliminated. AT is usually used in a defensive role. Attack helicopter is difficult to predict.

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APPENDIX 4: DEFINITION OF KEY TERMS

TERMS ARE GROUPED FOR CONTRAST:

1. TERMS BY WHICH THE COMMANDER DESCRIBES INTENT:
a. BLOCK: A mission which requires a unit to deny the enemy access to a given area or to prevent enemy advance in a given direction.

b. CONTAIN: To restrict enemy movement by stopping, holding or surrounding his forces or causing them to center their activity on a given front to prevent movement of any part of his forces for use elsewhere. Limits of mission expressed in geography or time.

c. FIX: Actions taken to prevent the enemy from moving any part of his forces from a specific location and/or for a specific period of time.

d. DESTROY: Make a unit unfit for any mission for the foreseeable future. Usually implies reducing a unit by 70% to 30% strength.

e. DEFEAT: Cause a unit to fail in its mission. Usually implies reducing the unit by 30% to 70% strength.

f. DELAY: An operation usually conducted when the commander needs time to concentrate or withdraw forces, to establish defenses in greater depth, to economize in an area, or to complete offensive actions elsewhere. In the delay, the destruction of the enemy force is secondary to slowing his advance to gain time.

2. SECURITY OPERATIONS:
a. SECURITY: Measures taken by a military unit to protect itself against all acts designed to, or that may, impair its effectiveness. All actions taken to prevent surprise.

b. SURPRISE: To strike the enemy at a time and/or place and in a manner for which he is unprepared.

c. SCREEN: Maintain surveillance, provide early warning to the main body, impede and harass the enemy with supporting INDIRECT FIRES, destroy enemy recon elements WITHIN CAPABILITY.

d. GUARD: Accomplishes all the tasks of a screening force; additionally, a guard prevents enemy ground observation of and direct fire against the main body. A guard force reconnoiters, attacks, defends and delays as necessary to accomplish its mission. A guard force normally operations with the range of the main body indirect fire weapons.
4-1
e. ADVANCE GUARD: Accomplishes all guard tasks. Operates ahead of a moving body. It is implied that the force will conduct zone and route reconnaissance ahead of itself.

f. FLANK GUARD: A security element operating to the flank of a moving or stationary force. When conducted for a moving force this mission implies early warning, counterrecon, protection of the main body from direct observation, and that the element will conduct route and zone recon ahead of itself.

g. REAR GUARD: A guard force that follows a moving force or more usually a force left in contact to assist a unit in breaking contact.

3. RECON OPERATIONS:
a. ZONE RECON: A directed effort to obtain detailed information concerning all routes, obstacles(to include chemical or radiological contamination), terrain, and enemy forces within a zone defined by boundaries.

b. AREA RECON: A directed effort to obtain detailed information concerning terrain or enemy activity with a prescribed area such as a town, ridge line, woods or other feature critical to operations.

c. ADVANCE GUARD: Accomplishes all guard tasks. Operates ahead of a moving body. It is implied that the force will conduct zone and route reconnaissance ahead of itself.

d. ROUTE RECON: A directed effort to obtain detailed information of a specific route and all terrain from which the enemy could influence movement along that route.

4. HANDLING TIME:
a. ON ORDER: Understood as a time. An on order mission will happen only the exact time is vague. Typical of reserve forces. Often belongs in the restated mission.

b. BE PREPARED: A mission that may or may not happen. Often given to a reserve force. Does not belong in the restated mission.

c. AT: Exact time a synchronized attack will be executed. Used in offensive mission statements.

d. NOT LATER THAN (NLT): Time a defensive mission will begin. Allows for our not knowing exactly when the enemy will arrive. Unit will be prepared to defend not later than a certain time.

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5. OFFENSIVE MISSIONS AND INSTRUCTIONS:
a. FOLLOW: Not a mission. This is an instruction as to where to be in relation to another unit.

b. FOLLOW AND SUPPORT: A committed force which follows a force conducting an offensive operation...not a reserve but is committed to accomplish any or all of these tasks: destroy bypassed units, relieve in place any direct pressure or encircling force which has halted to contain the enemy, block movement of reinforcements, secure lines of communications, guard prisoners or key areas, secure key terrain and control refugees.

c. FOLLOW AND ASSUME: A force not yet committed. May be a reserve. Follows another unit and on order, assumes the other unit's mission, i.e., becomes the main or supporting attack.

d. SEIZE: To clear a designated area and obtain control of it. A unit assigned to SEIZE AN OBJECTIVE, must clear the objective as opposed to the entire zone. Used to control terrain for a limited period of time.

e. SECURE: To gain possession of a position or terrain feature, with or without force and to deploy in a manner which prevents its destruction or loss to the enemy. A unit told to secure an objective may or may not physically occupy it; it will be on terrain that dominates the objective. A hasty defense is usually implied.

f. CLEAR ENEMY IN ZONE: A requirement to eliminate organized resistance in an assigned zone by destroying, capturing or forcing the withdrawal of enemy forces that could interfere with the unit's ability to accomplish its mission.

g. FIX: Actions taken to prevent the enemy from moving any part of his forces from a specific location and/or for a specific period of time.

6. OTHER IMPORTANT TERMS:
a. ALTERNATE POSITION: The position given to a weapon, unit, or individual to be occupied when the primary position becomes untenable or unsuitable for carrying out its task. The alternate position is located so that the individual can continue to fulfill his original task that is, engage the same targets as from his original position.

b. SUCCESSIVE POSITIONS: Defensive fighting positions located one after another on the battlefield. SUBSEQUENT POSITIONS, RECONNED or PREPARED, would be of this type. Reconned means the commander has looked at the terrain; prepared means that some preparation has been made such as prestocks of ammo, digging of obstacles or fighting positions.
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c. SUPPLEMENTARY POSITION: That location which provides the best means to accomplish a task that cannot be accomplished from the primary or alternate positions, that is guard against flank attack or attack from a new direction.

d. ASSAILABLE FLANK: An exposed enemy flank which is vulnerable to envelopment. For a flank to be assailable, there must be sufficient maneuver space to accommodate the attacking force.

e. ATTRITION: The reduction in the effectiveness of a force caused by loss of personnel and material.

f. AVENUE OF APPROACH: An air or ground route of an attacking force of a given size leading to its objective or to key terrain in its path. Terrain determined.

g. AXIS OF ADVANCE: A general route of advance, assigned for purposes of control, which extends toward the enemy. Portrays a commander's intention, such as avoidance of built up areas or envelopment of an enemy force. It follows terrain suitable for the size of the force assigned the axis. A commander may maneuver his forces and supporting fires to either side of an axis of advance provided the unit remains oriented on the axis and the objective, and does not interfere with the maneuver of adjacent units.

h. BATTLE POSITION: A defensive location oriented on the most likely enemy avenue of approach from which a unit may defend or attack. A unit normally needs approval from higher headquarters to withdraw from a BP.

i. CANALIZE: Not channelize. CAN-AL-EYES. To restrict operations to a narrow zone by use of existing or reinforcing obstacles or by direct or indirect fires.

j. CARPET BOMBING: Ask CNN. Not a military term. Maybe it means to blow up magic carpet factories in Baghdad. Like many terms used in the press that sound good, it has no military definition. OCCUPY THE ENEMY'S ATTENTION, CROSS ATTACHING and AUGMENT THE SCOUT PLATOON fall in this same category.

k. COMBAT MULTIPLIER: Supporting and subsidiary means that significantly increase the relative combat strength of a force while actual force ratios remain constant. Examples of combat multipliers are economizing in one area to mass in another (accepting risk in one area), surprise, deception, camouflage, electronic warfare, psychological operations, terrain reinforcement (obstacles), and fire support.

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l. COMMITTED FORCE: A force in contact with an enemy or deployed on a specific mission or course of action which precludes its employment elsewhere.

m. DEFILADE: Protection from hostile observation and fire provided by an obstacle such as a hill, ridge, bank or wash/wadi.

n. DEMONSTRATION: An attack or show of force on a front where decision is not sought, made with the aim of deceiving the enemy. It is similar to a feint with the exception that no contact with the enemy is sought.

o. ENGAGEMENT AREA: An area in which the commander intends to trap and destroy an enemy force with the massed fires of all available weapons.

p. ESSENTIAL ELEMENTS OF FRIENDLY INFORMATION (EEFI): The critical aspects of a friendly operation that, if known by the enemy, would subsequently compromise, lead to failure, or limit success of the operation and therefore, must be protected from enemy detection. The reverse of PIR.

q. EXPLOITATION: An offensive operation that usually follows a successful attack to take advantage of weakened or collapsed enemy defenses.

r. PENETRATION: A form of offensive maneuver that seeks to break through the enemy's defensive position, widen the gap created, and destroy the continuity of his positions.

s. REAR BATTLE THREAT LEVELS:

(1) LEVEL I: Enemy controlled agent activity, sabotage by enemy sympathizers, activities conducted by terrorist organizations.

(2) LEVEL II: Diversionary operations and sabotage and reconnaissance missions conducted by tactical units of less than battalion size.

(3) LEVEL III: Airborne, air assault, amphibious operations, or infiltration operations of battalion size or larger.

t. RETIREMENT; A retrograde operation in which a force out of contact moves away from the enemy.

u. REVERSE SLOPE DEFENSE: A defense on the ground not exposed to direct fire or observation. It may be a slope that descends away from the enemy.

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v. SITUATIONAL TEMPLATE: A series of projections that portray, based on enemy doctrine, the most probable disposition and location of enemy forces within constraints imposed by weather and terrain.

w. SITUATION MAP (SITMAP): A map showing the tactical or the administrative situation at a particular time.

x. SORTIE: One aircraft making one takeoff and one landing, and executing one mission. An operational flight by one aircraft.

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