FM-3-09 Fire Support and Field Artillery Operations Download
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Fire Support Coordination Measures 30 April 2020 FM 3-09 B-13 B-39. A FA unit's higher HQ may also assign a FA unit a ZF. The ZF for artillery units assigned to a maneuver unit or assigned the DS support relationship corresponds to the AO of the parent or supported unit. The ZF for an artillery unit assigned the R support relationship corresponds to the ZF of the reinforced artillery unit. The ZF for an artillery unit assigned the GSR support relationship corresponds to the AO of the supported unit including the zones of fire of the reinforced artillery unit. The ZF for an artillery unit assigned the GS relationship corresponds to the AO of the supported unit. See JP 3-02 for more information on amphibious operations. FINAL PROTECTIVE FIRE B-40. Final protective fire is an immediately available, prearranged barrier of fire designed to impede enemy movement across defensive line or areas (JP 3-09.3). An FPF provides continuous fires on a planned target. FPFs should be integrated with maneuver crew served weapons final protective lines. When the adversary initiates the final assault into a defensive position, the defending unit initiates its FPFs to kill adversary forces and suppress armored vehicles. B-41. The FPF consists of a single black line. Two anchor points, one at each end of the line, determine the line's length and orientation. The target number followed by the firing unit responsible and the caliber of that unit's weapons below the line. (See figure B-11) portrays the assigned FPFs of Alpha Battery, 1st BN 16th FA (155-mm), a priority target for that unit. Figure B-11. Final protective fire example BOUNDARIES B-42. A boundary is a line that delineates surface areas for the purpose of facilitating coordination and deconfliction of operations between adjacent units, formations, or areas (JP 3-0). Boundaries divide up areas of operation and define responsibility for clearance of fires. Boundaries are both permissive and restrictive in nature (see figure B-12 on page B-14). B-43. They are permissive in that a maneuver commander, unless otherwise restricted, enjoys designation of priority, effects, and timing of fire and maneuver within their own boundaries. Thus units may execute joint fires without close coordination with neighboring units unless otherwise restricted. They are restrictive in that normally units do not fire across adjacent or forward boundaries unless the fires are coordinated with the affected unit or the fires are allowed by a permissive fire support coordination measure, such as a CFL. These restrictions apply to conventional and special munitions and their effects. For more information on boundaries, see ADP 3-90.