Which of the following is NOT a critical task for zone reconnaissance?

Establishing communication protocols is generally considered a foundational task that supports various reconnaissance operations but is not specific to the critical tasks required for conducting a zone reconnaissance. Zone reconnaissance focuses on gathering information about the terrain, enemy forces, and specific features such as obstacles and crossing zones in a designated area.

Reconnaissance of terrain and enemy forces allows units to understand the conditions and potential threats they may face. Identifying crossing zones and obstacles is crucial for planning movements and logistics, ensuring that units can navigate the area effectively. Overwatching ground elements is essential to provide real-time intelligence and support during maneuver operations. While communication is undoubtedly vital to any military operation, it does not directly relate to the critical objectives of a zone reconnaissance mission itself.