What is a "grid azimuth" and how is it used in a CFF?

What is a "grid azimuth" and how is it used in a CFF?

• A. The direction from north to the target's grid point; used by the FDC to compute gunlaying.
• B. The angular difference between grid north and true north.
• C. The distance from the observer to the target in grid units.
• D. The elevation needed to hit the target.

Answer: (A)

Grid azimuth is the horizontal direction to the target expressed on the map’s grid, measured from grid north to the target’s grid point. In a call for fire, the observer provides this direction so the Fire Direction Center can calculate gunlaying—the horizontal aiming angle required to point the weapon along the line to the target. The grid azimuth defines where the gun should be aimed on the map, and, if needed, the FDC converts that grid-based direction to the gun’s actual aiming system (magnetic or true azimuth) for firing. This is about direction to the target, not distance, elevation, or grid north–to–true north differences.

Grid azimuth is the horizontal direction to the target expressed on the map’s grid, measured from grid north to the target’s grid point. In a call for fire, the observer provides this direction so the Fire Direction Center can calculate gunlaying—the horizontal aiming angle required to point the weapon along the line to the target. The grid azimuth defines where the gun should be aimed on the map, and, if needed, the FDC converts that grid-based direction to the gun’s actual aiming system (magnetic or true azimuth) for firing. This is about direction to the target, not distance, elevation, or grid north–to–true north differences.