What is not a function of the tactical obstacles described in the text?

The correct choice identifies a function that tactical obstacles do not serve. Tactical obstacles are primarily designed to impede, limit, or control the movement of enemy forces on the battlefield. Their main functions include blocking enemy movement, fixing enemy maneuvers (which means ensuring that enemy forces remain in place to make them vulnerable to attacks), and disrupting enemy formations, which hinders their operational capabilities and effectiveness.

Reconnaissance, on the other hand, involves gathering information about the enemy and the battlefield rather than creating physical barriers or obstacles. While reconnaissance is essential for planning and executing tactical operations, it is not the role of tactical obstacles to assist in this process. Instead, their purpose centers on affecting the enemy's ability to advance or maneuver effectively.

Therefore, identifying reconnaissance as not a function of tactical obstacles reflects an understanding of the broader tactical landscape on the battlefield and the specific utility of these obstacles.