While adjusting your 105mm FPF (manual FDC, platoon 4 gun), you notice in the first volley that Gun #1 and Gun #3 within the sheaf impacted closest to your planned FPF line which gun do you adjust first?

• A. Gun 2
• B. Gun 3
• C. Gun 4
• D. Gun 1

Answer: (D)

The goal in this situation is to move the entire pattern so its center falls on the planned FPF line. When two guns in the first volley land closest to that line, you start by adjusting the gun that is nearest to the line on the near side. That choice pulls the whole group toward the line with the smallest, most efficient correction and sets up a quicker final alignment.

In this setup, the gun closest to the planned FPF line on the near side is the one you adjust first. After that correction is observed, you can re-assess and make any additional tweaks with the other near-side gun if needed. Other guns that are farther from the line (or on the opposite side) would require larger corrections or push the pattern away from the line, so they’re not the first choice.