What tactical mission task involves engaging the enemy by direct fire?

The task that involves engaging the enemy by direct fire is "support by fire." This tactical mission is crucial for providing effective cover and firepower for units maneuvering to engage the enemy more directly. In a support by fire role, one element lays down suppressive fire to disrupt enemy forces, allowing another element to move or engage without the burden of returning fire from the enemy.

Support by fire operations are typically configured to maximize the effectiveness of the weapon systems in play, ensuring that firepower is focused on enemy positions to neutralize threats. This task is vital in combined arms maneuvers, where coordination between various units enhances the overall efficacy of the operation.

In contrast, the other tasks focus on different aspects of combat operations. Suppressing the enemy entails applying force to limit their ability to engage effectively, but it may not always involve direct fire engagements. Seizing refers to taking control of a specific area or objective, which may involve direct fire but is broader and less focused than just engaging the enemy. Screening involves providing early warning and protecting movement, which often involves reconnaissance rather than direct engagement.

Therefore, support by fire specifically captures the essence of engaging an enemy through direct fire while simultaneously allowing other units to execute their missions effectively.