Which tactical mission task involves breaking through enemy defenses?

The tactical mission task that involves breaking through enemy defenses is accurately identified as Breach. This task is specifically designed to create a passage through obstacles or defensive positions held by the enemy, allowing friendly forces to advance into a contested area.

In a breach operation, troops may use explosive charges, armored vehicles, or specialized equipment to create an opening in enemy fortifications or minefields. This task is crucial when the objective is to penetrate deep into hostile territory, often enabling follow-on forces to exploit the opening created and achieve operational success.

Understanding the context of a breach is important as it distinguishes itself from other tactical mission tasks. For instance, a block involves preventing enemy movement into or out of an area, while a screen is focused on providing early warning of enemy movements. Cover relates to protecting a force’s capabilities rather than engaging directly with enemy defenses. Therefore, Breach is the clear and correct choice when discussing the act of breaking through enemy defenses.