Chapter 2. COUNTERMOBILITY FUNDAMENTALS. This chapter provides a standard classification and a detailed discussion of existing and reinforcing. Full text of “FM Countermobility” Countermobility support is divided into mine warfare and obstacle development, each with an ultimate goal of delaying, . FM Headquarters Department of the Army Washington, DC, 14 March C O U N T E R M O B I L I T Y. he foundation for engineer doctrine in .

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Effective reinforcement coountermobility existing obstacles also enhances economy of force operations by permitting friendly cluntermobility to concentrate on more trafficable terrain approaches. The exact shape, however, depends on the type of soil found in the area of operations.

Demolitions are commonly used to create reinforcing obstacles. More conventional ways to obtain surprise are also available and should be used. A worst case example would be for air assets to prematurely destroy a bridge that would be a major avenue of approach for a ground counterattack. Prime the charges in each row separately for simultaneous detonation.

In arid regions, dry stream channels maybe preferred avenues for movement during periods of little or no flow. The most efficient ditch is either a rectangular or triangular ditch.

Countermobility on the Battlefield

They should be located within the effective range of friendly direct fire antitank weapons. Log obstacles can be constructed entirely by hand.

Denial should provide for the systematic destruction of key generating plants. A squad can assemble a meter-long triple charge in 1 to 1. The static and dynamic defensive frameworks are the extremes of the spectrum.

The nature and extent of reinforcing obstacles is limited only by the imagination of the commanders or engineers who design them and the soldiers who emplace them. Dust storms and snowstorms have the same effect. Log hurdles can stop tanks on uphill grades. Even if gaps are cleared through the rubble and debris, movement is still canalized. Demolition firing party commander The demolition firing party commander receives orders from the demolition guard commander and is in technical charge of the preparation and firing of the reserve obstacle.


In the threat view, a delay at a major water obstacle can jeopardize the success of an entire offensive operation in conventional combat, and is certain to destroy large forces massed for the crossing during a nuclear war. Vegetation includes not only natural, “wild” vegetation, but also cultivated forests and crops. Entry and exit gradients. Evacuation of material is as much a part of denial operations as destruction and should always be considered first.

The shafts are installed either vertically or at an angle, and each shaft is closed by a steel shaft cover which resembles a sewer manhole cover. Timmerman, commander of A Company, 27th Armored ifantry Battalion, and his soldiers rushed across the bridge.

It is preferable to obtain the earth by digging a shallow ditch in front of the obstacle. The nature of the terrain and location of areas with natural concealment. For example, highway and railway bridges crossing a major unfordable river may be of such strategic importance that a high commander is willing to isolate some troops, perhaps a brigade, on the enemy side of the river rather than to risk capture of the bridge intact.

Because of the large quantities of explosives necessary to destroy such large targets, the galleries are constructed to allow the uninhibited movement of personnel carrying munitions to the chambers. Existing obstacles are already present on the battlefield and not placed there through military effort.


FM Countermobility – Appendix D

The decision on the organization and method adopted is made only countermobiliy a careful analysis of the factors involved, including the adequacy of communications. The ditch must be wide enough to prevent the tank from simply running over it, and narrow enough to force the tank to expose itself to our defense firepower.

Countetmobility is not as effective as the deliberate crater, which will be described later. Topographic maps are useful but some features may not be shown; for example, small gullies.

Full text of “FM Countermobility”

Because of the possible need to recover minefield as the advance progresses, antipersonnel mines are rarely included in an antitank minefield laid in support of offensive operations.

They are detonated according to the instructions in the order. Mines and minefield perform this function as well as killing or destroying enemy counrermobility and personnel. Visibility, climate, weather, and their effects.

On hard-surfaced roads, drill the two rows 12 feet apart. Consider the terrain and assets available, and construct ditches in a pattern that will confuse, present good targets, and force the enemy to use resources to breach.

Pros and cons must both be considered. This antitank orientation of terrain analysis and obstacle development narrows our focus and makes the task more simple. However, such determinations must be made at appropriate levels of command based on the circumstances at the time. Scatterable countermobiliry are reinforcing obstacles emplaced by various delivery systems such as artillery or aircraft. Obstacles are classified as either existing or reinforcing.