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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In the threat view, the greater the increase in mobile warfare, the greater the need for passable terrain. The primary combat engineer element performing mine warfare support for the offense countermibility a temporary organization called a mobile obstacle detachment, Podvizhnoy Otriad Zagrazhdeniya POZwhich is formed from elements of regimental and divisional combat engineers.

Regardless of the type defense employed by the tactical commander, there are five basic employment principles for reinforcing obstacles:. He loses time during this decision process and presents a good target to friendly weapons.

FM Countermobility – Chptr 1 Countermobility On The Battlefield

Countrrmobility production data of estimated construction times is shown for counhermobility 1. Their employment must be carefully planned and fully coordinated. A tank ditch alone is not an adequate obstacle and will not stop a determined attacker. To consider another example, every tanker knows how effectively a number of terraces or ditches, each individually crossed, can interfere with movement.

The critical design width of an obstacle is the distance xountermobility an existing obstacle to another existing obstacle or to another reinforcing obstacleand not the width of a road or highway through the existing obstacle. Ground reconnaissance is always the best source of information; for many areas, it is the only reliable source.


Wet weather, trees, unfavorable soil conditions, snow, boulders, and the employment of reinforcing obstacles may make gentle slopes impassable. This concept has significant advantages; for example, the pipes are buried during peacetime and, when a tank ditch is required, the pipes are filled with explosive and detonated. The charge is tamped with material twice as thick countermobiilty the pavement. This plan is based upon two principles:. When attacking from the march, the location of enemy minefield is the responsibility of engineer reconnaissance patrols IRDs.

Banks made up of fine-grained soils may fail under repeated traffic. In winter, ice may be strong enough to support vehicles; then, instead of being obstacles, water bodies may become the preferred avenues for movement. Obstacles must be covered by fire countermobilitj at all possible.

Another role for ADM in the offense is to create obstacles behind the enemy to prevent escape from the attacking forces. Road and Bridge Group: Although streams are normally small and slow during periods of low precipitation, and large and rapid during periods of high precipitation, the relationship is not always this simple.

In the offense, the chief function of engineers is to assist in maintaining high rates of movement, which is the premier tactical principle of threat military doctrine. Friendly forces must avoid readily discernible, repetitive patterns. Thus, the detection of minelaying activity offers mf friendly force an indication of 5-1002 manner in which the threat command will be employed, and highlights those areas deemed critical to success.

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Engineer reconnaissance of water crossings. Scatterable mines will be employed against enemy units anywhere on the battlefield. Threat doctrine establishes the desired crossing time for cuontermobility division combat elements as 3 hours during daylight and 6 to 8 hours at night.

Vehicles can be equipped with deep water fording devices that will enable them to cross water bodies as deep as 5 to 6 meters 17 to 20 feet. An obstacle that can be bypassed immediately is worthless. An obvious pattern of obstacles would divulge locations of units and weapons.

FM 5-102 Countermobility

Often, a ford may be negotiated with minor difficulty by the first fn vehicles, but the ones remaining will be unable to cross because bottom conditions or approaches have deteriorated with use. Existing obstacles are those natural and cultural restrictions to movement that are a part of the terrain when battle planning begins.

Finally, terrain factors are evaluated in light of the movement of a combined arms formation, and not of one tank. Preconstructed obstacles are key to the defense in that they are properly located and can be executed quickly with minimal manpower.

In obtaining this information, engineers may, as in other offensive operations, accompany combined arms reconnaissance teams; or, engineer patrols IRDs may operate countermobbility. Demolitions are commonly used to create reinforcing obstacles.