ATP-3-09-30 Observed Fires Download
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Chapter 7 7-8 ATP 3-09.30 28 September 2017 IRREGULARLY SHAPED TARGET 7-30. When calling for fire on an irregularly shaped target, the observer must request the appropriate sheaf or describe the target in sufficient detail to allow the fire direction officer to decide how to best attack the target. Choices include circular, linear, rectangular and laser drawn targets. For targets that warrant multiple batteries or battalions, segment the target so that batteries provide coverage for a portion of the target. CIRCULAR SHEAFS 7-31. Circular sheafs may provide the best coverage of an irregular target area. The circular sheaf is the default sheaf as discussed in Chapter 4. LINEAR AND RECTANGULAR TARGETS 7-32. Linear and rectangular targets require orientation in terms of direction. The observer sends the grid, size, and attitude of the target. The grid is the location of the center of the target. The size is the length and width of the target. The target attitude is described as a clockwise angle, in mils, measured from grid north to a line passing through the long axis of the target (see figure 7-7). Send attitude (always less than 3200 mils) to the nearest 100 mils. Example E12 THIS IS E22, FIRE FOR EFFECT, OVER. GRID NK847751 ALTITUDE 265, OVER. INFANTRY PLATOON IN TRENCH LINE, 50 x 200, ATTITUDE 2600, VT, OVER. Figure 7-7. Target attitude LASER DRAWN TARGETS 7-33. For an irregularly shaped target, the observer may send polar data to multiple points "drawn" or traced on the target and identify these points to the FDC as a laser draw.