What type of maneuver is described as seeking to rupture enemy defenses on a narrow front?

The correct answer is penetration. This type of maneuver is specifically aimed at breaking through enemy defenses on a narrow front, allowing opposed forces to exploit the gap for tactical advantage. A penetration maneuver typically involves concentrating firepower and resources at a specific point to create a breakthrough, leading to further offensive actions into enemy territory.

This strategy is essential during ground operations where establishing a foothold behind enemy lines can disrupt their command and control, making it feasible for additional units to exploit the breach. Penetration is critical for offensive operations meant to seize key terrain, disrupt supply lines, or engage in follow-on assaults against vital enemy infrastructure.