3All depths are approximate and will need adjustment for surrounding terrain and fields of fire.
"Production rate of 100 bank cubic yards per 0.75 hour. Divide construction time by 0.85 for rocky or hard soil, night conditions, or closed hatch operations (M9). Use of natural terrain features will reduce construction time.
(1) Hasty fighting positions. Hasty fighting positions for combat vehicles and mortar carriers take advantage of natural terrain features or are prepared with a minimum of construction effort. A frontal parapet, as high as practical without interfering with the weapon systems of the vehicles, shields from frontal attack and provides limited concealment if properly camouflaged. Protection is improved if the position is made deeper and the parapet extended around the sides of the vehicles. Because of the false sense of security provided by parapets against kinetic energy and hypervelocity projectiles, hasty vehicle fighting positions with parapets are not recommended for tanks and infantry fighting vehicles (IFVs). Hasty fighting positions do offer protection from HEAT projectiles and provide limited concealment if properly camouflaged. As the tactical situation permits, hasty positions are improved to deliberate positions. See Figures 2-8 and 2-9.
•Length (l)»Width (w)»Height (h)»Time (hr/min)»»M113 series carrier«7«4.5«2.0«0/36«®M577 command post vehicle^7M.5^30 0/48"M106 and M125 mortar carrier^5.0^2.5^0/42"
NOTE: Total depth (d) includes any parapet height (h).
Figure 2-9. Hasty Fighting Position for Combat Vehicles
(2) Deliberate fighting positions. Deliberate fighting positions are required to protect a vehicle from kinetic energy hypervelocity projectiles. The position is constructed in four parts: hull defilade, concealed access ramp or route, hide location, and turret defilade. Positions formed by natural terrain are best because of easy modification; however, if preparation is necessary, extensive engineer support is required. Each position is camouflaged with either natural vegetation or a camouflage net, and the spoil is flattened out or hauled away. All fighting positions for fighting vehicles (tanks, IFVs) are planned as deliberate positions. Since the lack of time usually does not allow the full construction of a deliberate position, then only some parts of the position construction are prepared. For example, the complete fighting position for a tank requires the construction of a hull defilade, turret defilade, concealed access ramp or route, and hide location all within the same fighting position. The maneuver team commander uses organic and engineer earthmoving assets and usually constructs fighting position parts in the following order:
• Concealed access ramp or route.
• Turret defilade.
(a) Modified, two-tiered hiding position. See Appendix E, pages E-11 and E-12, for illustrations showing the various modified fighting positions.
(b) Modified, two-tiered artillery position. See Appendix E, pages E-13 and E-14, for the step sequences and illustrations of deliberate fighting positions.
(c) Deliberate fighting positions. The Ml tank (hull defilade) (Figure 2-10) in wide-open terrain (such as deserts) maneuvers between hull defilade positions and is camouflaged by organic mortar smoke or vehicle smoke generators.
c. Protective Positions. Vehicle protective positions are constructed for vehicles and weapon systems that do not provide direct fire against the enemy. The positions are neither hasty nor deliberate because they all require extensive engineer assets and construction materials to build. Unless separate overhead cover is constructed, the positions do not provide blast protection from indirect-fire, superquick, contact, or delay-fuzed shells. The positions do, however, provide medium artillery shell fragmentation protection from near-miss bursts greater than 5 feet from the position and from direct-fire HEAT projectiles 120 millimeters or less fired at the base of the position 8-foot-thick parapet.
(1) Artillery firing platform. Artillery firing platforms (Figure 2-11) for towed or self-propelled artillery weapons are necessary on soft ground to preclude weapon relaying after each round is fired. The pad distributes the load over a large area with no significant settlement and is flexible, level, and strong enough to withstand the turning and movement of self-propelled weapons. The pad allows firing in all directions. Trail logs are anchored outside the pad for towed weapons. For self-propelled weapons, the recoil spaces are set in compacted soil material or in a layer of crushed rock around the pad. These positions provide limited protection with the use of a parapet.
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