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-3 B-6. By establishing a FSCL close-in, yet at sufficient depth so as to not limit the tempo of maneuver forces and eases the coordination requirements for engagement of targets within their areas of operations by forces that may not be under their direct control. The commander adjusts the location of the FSCL as required to keep pace with operations. In large-scale ground combat operations, the FSCL will change frequently. The joint force commander should establish a time standard and guidance for shifting an FSCL. B-7. The FSCL is a term oriented to land and airspace operations and is normally located only on land. In certain situations, such as littoral areas, the FSCL may affect both land and sea areas. If possible, the FSCL should follow well-defined terrain features to assist identification from the air. The commander of the landing force normally establishes the FSCL for amphibious operations. Changes to the FSCL require notification of all affected forces within the AO and must allow sufficient time for these forces to incorporate the FSCL change. When friendly forces are operating beyond the FSCL restrictive FSCMs such as RFAs and NFAs should be employed to protect those forces. B-8. A solid black line extending across the assigned areas of the establishing HQ provides the graphic portrayal of the FSCL (see figure B-2). The letters "FSCL" followed by the establishing HQ are annotated above the line, and the effective date-time-group below the line. FSCLs do not have to follow traditional straight-line paths. Positioning the FSCL on terrain identifiable from the air is a technique that may further assist in fratricide prevention. Curved or enclosed FSCL have applications in joint operations conducted in non-contiguous areas of operation. Figure B-2. Fire support coordination line example B-9. The decision on where to place or even whether to use a FSCL requires careful consideration. If used, its location is based on estimates of the situation and concept of operations. The establishment of a FSCL does not create a FFA beyond the FSCL. Engagements beyond the FSCL must be consistent with the establishing commander's priorities, timing, and desired effects. Location of enemy forces, anticipated rates of movement, concept and tempo of the operation, organic weapon capabilities such as wide-area munitions, or those with delayed effects, and other factors are all considered by the commander. The FSCL is normally positioned closer to the forward line of own troops in the defense than in the offense; however, the exact positioning depends on the situation. Placing the FSCL at greater depths will typically require support from higher HQ and other supporting commanders. Also, when the FSCL is positioned at greater depth, there is