In terrain denial, which concept channels the enemy movement along a designated corridor to simplify defense?

• A. Block
• B. Attack by fire
• C. Reconnaissance
• D. Canalize

Answer: (D)

Canalize means to channel enemy movement along a designated corridor to simplify defense. In terrain denial, the defender shapes the battlefield so the adversary is funneled into limited routes. By using terrain features and obstacles to create a narrow path, defenders can concentrate fire, synchronize defenses, and predict where the enemy will move, making it much easier to stop or destroy them along that corridor. The other options don’t achieve this deliberate shaping of the attacker’s routes: blocking aims to physically seal passages, but not to steer movement into a specific path; attack by fire focuses on applying firepower to a target area, not on routing moves; reconnaissance is about gathering information to act more effectively, not about constraining movement.