2003 US Army BRADLEY GUNNERY 503p.pdf - Survival Books

FM 3-22.1and artillery, to cover those areas. Vehicle crews walk the engagement area to helpgunners identify the dead spaces through the ISUs.d. Maximum Engagement Line. The depth of the sector seldom exceeds themaximum effective engagement range of the vehicle's weapons systems. It can be less,however, if objects prevent the gunner from engaging targets at that range. To helpdetermine the distance to each MEL, the gunner or BC should use a map to make surethat he shows the MELs correctly on the range card. MEL identification helps reduce theamount of ammunition used in an engagement.e. Weapon Reference Point. The WRP is easy to recognize on the map. This terrainfeature helps leaders plot the vehicle's position, and it helps replacement personnel findthe vehicle.7-22. PREPARATIONThe gunner prepares two copies of the range card. If the leader assigns alternate andsupplementary firing positions, he must make two copies of each of these as well. Hekeeps one copy of each range card with the vehicle, and gives the other copies to thesection leader for his sketch.a. Draw the weapon symbol in the center of the small circle. Draw two lines fromthe position of the BFV extending left and right to show the limits of the sector (Figure 7-11, page 7-25).b. Determine the diameter of each circle by finding the farthest terrain feature that isstill within the weapon system's effective range. Determine the distance in meters to theterrain feature. Round off the distance to the next higher hundred, if necessary. Determinethe greatest number of circles that will divide evenly into the distance (rounded to thenearest 50 meters). The result is the diameter of each circle. Draw the terrain feature onthe appropriate circle on the range card. Clearly mark the increment for each circle acrossthe area where DATA SECTION is written. For example, Figure 7-12, page 7-26, showsa hilltop at 3,145 meters. The distance rounds up to 3,200 meters which, divided by 8equals 400. Thus, each circle has a diameter of 400 meters.(1) Figure 7-13, page 7-27, shows a farmhouse at 2,000 meters on the left limit. Thewood line at 2,600 meters marks the right limit. Determine the distance to these featuresby using a map; an ELRF (on ODS and M2A3 vehicles only); or a miniature, eye-safelaser,infrared observation set (MELIOS). Note how the circle markings can help youposition the other features on the range card.(2) Draw all TRPs and reference points in the sector. Mark each of these with acircled number, starting with 1. Figure 7-14, page 7-28, shows the hilltop as RP 1, oneroad junction as RP 2, and a second road junction as RP 3. Sometimes a TRP andreference point are the same point, for example, RP 2 and RP 3. This occurs when youuse a TRP both to acquire targets and to determine range. Mark the TRP with the firstdesignated number in the upper right quadrant; mark the reference point in the lower leftquadrant of the cross. Determine the range to the junction, draw the junction, and thendraw the connecting roads from the road junction.(3) Show dead space as an irregularly shaped area with diagonal lines drawn inside(Figure 7-15, page 7-29). For any object that prohibits observation or coverage with directfire, extend the circle and diagonal lines to the farthest maximum engagement line. If the7-23