What are the two main missions of machine guns in a defensive position?

In a defensive position, machine guns serve crucial tactical roles to enhance the overall effectiveness of the defense. The primary missions are to establish a Primary Direction of Fire (PDF) and a Final Protective Line (FPL).

The Primary Direction of Fire is important because it designates the most likely avenue of approach for enemy forces. This means that the machine gun is oriented to cover this area effectively, ensuring that it can engage any threats directly. Establishing the PDF allows defenders to maximize their firepower and maintain focus on the anticipated enemy movements, fostering a coordinated defense.

The Final Protective Line, on the other hand, functions as a last line of defense designed to halt an enemy attack. It is typically a predetermined line of fire that the machine gun will engage if the enemy breaches initial defenses. This mission is vital for deterring adversaries from advancing past a certain point and provides a critical fallback position for defenders.

Both of these missions align the capabilities of machine guns with the overarching strategy of maintaining control and enhancing situational awareness within a defensive framework, allowing forces to leverage the machine gun's strengths effectively.