Which mortar caliber is mentioned for FPF planning?

• A. 81 mm
• B. 60 mm
• C. 120 mm
• D. 155 mm

Answer: (C)

Final Protective Fire planning relies on delivering a heavy, area-saturating fire to stop or deter enemy movement within the target zone. A 120 mm mortar provides a substantially larger payload and wider area effect than lighter mortars, giving planners the necessary lethality and reach to create a protective blanket over the objective. Lighter calibers like 60 mm or 81 mm lack the same explosive power and cover, making them less suited for standard FPF tasks. The 155 mm is artillery, not a mortar, so it isn’t the caliber referenced for this type of mortar planning.