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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Be capable of rapid maneuver to adapt to changing battlefield situations.

Countermobility on the Battlefield

These characteristics may vary independently so that fording of even the smallest stream requires selecting a site where favorable conditions coincide. Liking yau in writing para 13i tht ordar to llr lilt demolitifn. Road and Bridge Group: Terrain analysis techniques and existing obstacle evaluation, as described in chapter 2, cohntermobility performed.

The forward end section is fitted with a roller to facilitate insertion of the charge into a minefield. This crater, however, is filled with countemobility ice particles and, at temperatures around 20 degrees Fahrenheit Ffreezes over in 40 minutes.

Another role for ADM in the offense is to create obstacles behind the enemy to prevent escape from the attacking forces. A threat squad can assemble a meter-long triple charge in 1 to 1. Countermobilitg concept of using liquid bulk explosive and buried pipes is currently being tested and evaluated. Contaminants also can render an item temporarily unusable; however, items can be decontaminated. Doctrine emphasizes that commanders at all levels must strive for maximum flexibility in using engineer assets, inasmuch as engineer tasks are not isolated but are part of the overall tactical plan.


For example, all threat combat soldiers are expected to be proficient at mine clearance. Procedures for employment of scatterable mines to include provisions countermobiligy air and artillery delivery, if not specified by standing operating procedure SOP. Where necessary, metal matting is emplaced at soft bottom countermobiliy.

Obstacles must be countermboility by fire if at all possible. Posts should be hardwood with a minimum diameter of 40 centimeters CLIMATE Climate and weather both significantly affect cross-country movement, although their effects are usually indirect, and their influence is variable in duration and difficult to predict.

Obstacles are also used to delay and disrupt an attacking force, upset the enemy’s timing and plans, and divert him into engagement areas 5102 be destroyed. Thus, with primary interest in each type of target, the commander directs the preparation and destruction of the target and overlapping of responsibility does not occur. By this time, American machine gun fire and tank fire were i’eeping the bridge.

This plan is based upon two principles: All tank and motorized rifle units down through the regimental level have organic engineer elements. A steep cross-slope also makes it more difficult for the gunner to rapidly deliver accurate fire, thus giving the defender a relative advantage.

FM Countermobility – Chptr 1 Countermobility On The Battlefield

Hard-surfaced pavement of roads and airfields is breached so that holes may be dug for cratering charges. In mountainous areas, the steep slopes commonly make cross-country vehicular movement countermobilitt difficult or impossible. Reinforcing obstacles must be integrated with friendly observed fires, the friendly commander’s maneuver plan for both the enemy and friendly forces, and existing and reinforcing obstacles.


The destruction of a few selected bridges can force cross-country movement or long detours. These charges will penetrate farther, but the penetration distances were only tested in ice approximately 12 feet thick. If an ADM is used for cratering, there will be both close-in radiation and fallout, each effectively contaminating an area of reasonably predictable extent. However, an average of four countermobiliry six lanes can be expected with at least two developed into permanent lanes, 6 to 8 meters wide, for passage of artillery and logistic vehicles.

FM 5-102 Countermobility

The heaving quality of low velocity explosives will aid in clearing the hole of large boulders. Given the fluidity of combat under such conditions, a mine obstacle offers far greater flexibility in employment than antitank ditches, tetrahedrons, and other such relatively static obstacles. In evaluating terrain for cross-country movement, 45 percent about 27 degrees is commonly used as the reasonable upper limit for tanks, and 30 percent about 17 degrees for trucks.

The natural obstacle value of built-up areas can be readily reinforced, and those properly located to control approaches or key terrain can be developed into formidable strongpoints. The road network must be destroyed and the inherent natural pattern of cross-country movement should be disrupted.

Imagination and ingenuity are the key factors in successfully constructing and employing expedient obstacles.