How should gunners adjust their aim after using enfilade fire on a deep target?

When gunners utilize enfilade fire on a deep target, they should adjust their aim using the axis of the beaten zone. This is crucial because the beaten zone refers to the area where most rounds will impact along the trajectory of the machine gun fire, shaped by the weapon's characteristics and the terrain. In enfilade firing, where the target is approached from a parallel angle, understanding the beaten zone helps in effectively covering the intended area and ensuring concentrated fire along that line. Adjusting aim based on the beaten zone allows the gunners to maximize their effectiveness and accuracy, ensuring that they can maintain or increase the lethality of their fire against the target as needed.

Other options may involve various considerations like the enemy's reactions or distance changes but do not specifically address the importance of the beaten zone in the context of adjusting aim for enfilade fire.