Which zone sits behind the frontier defense zone and is the heart of the counterattack?

• A. Deep Area
• B. Rear Defense Zone
• C. Frontier Defense Zone
• D. Depth Defense Zone

Answer: (C)

The core idea here is that counterattacks are built around a central hub that sits close to the battlefield edge but has enough depth to mass forces and sustain momentum. The Frontier Defense Zone functions as that hub: it is the area where reserves are held, command and control converge, and fires from multiple arms can be concentrated quickly. Because it sits just behind the immediate front, it can receive the attacker’s breakthrough, absorb and disrupt the initial thrust, and then launch a coordinated, decisive counterattack to restore the line. This combination of proximity to the action and the ability to marshal massed effects makes it the focal point for the counterattack, so it is considered the heart of the pursuit to regain initiative. In practice, while deeper zones shape and support the operation, the frontline’s immediate hinterland—the frontier defense zone—provides the pivotal leverage for turning an enemy breach into a successful counterstrike.