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Previous: B-40: Quadrants
B-42. A terrain-based quadrant entails use of a TRP, either existing or constructed, to designate the center point of the axes dividing the area into four quadrants. This technique can be employed in both the offense and defense. In the offense, the platoon leader designates the center of the quadrant using an existing feature or by creating a reference point. For example, using a ground burst illumination round, an obscurant marking round, or a fire ignited by incendiary or tracer rounds. The axes delineating the quadrants run parallel and perpendicular to the direction of movement. In the defense, the platoon leader
designates the center of the quadrant using an existing or constructed TRP.
B-43. In examples shown in figure B-5, quadrants are marked using the letter “Q” and a number (Q1 to Q4); quadrant numbers are in the same relative positions as on military map sheets (from Q1 as the upper left-hand quadrant clockwise to Q4 as the lower lefthand quadrant).
Next: B-44: Friendly-Based Quadrant
Go Back To: U.S. Army FM 3-21.8: The Infantry Rifle Platoon and Squad