What is the standard FPF depth for 60mm mortars?

• A. 25 meters
• B. 40 meters
• C. 50 meters
• D. 30 meters

Answer: (D)

Understanding the concept: FPF depth is the distance in front of your position where final protective fire is placed to stop an enemy assault at close range. For lightweight mortars like the 60mm, that protection needs to be close enough to rapidly interrupt the enemy while keeping your teams safe and within the mortar’s short-range, high-angle fire.

The standard depth used for a 60mm mortar is 30 meters. This depth provides quick, immediate protection as the assault approaches, while giving the observer enough margin to correctly place rounds and avoid overshooting or unintentionally affecting friendly positions. It strikes a balance between being close enough to be effective and far enough to manage safety and accuracy.

Choices at 25 meters would be very tight and leave little room for error; 40 or 50 meters would place protective fire too far forward for reliable close-range effect with a 60mm mortar. Hence, 30 meters is the conventional depth for this caliber.