What is the primary characteristic of enfilade fire?

The primary characteristic of enfilade fire is that the long axis of the beaten zone aligns with the target. This means that when a weapon system is firing along the length of a target, the projectile strikes in a manner that maximizes the effectiveness of the engagement. This alignment allows the bullets to impact in a concentrated area, creating a higher likelihood of hitting targets within that zone.

Enfilade fire takes advantage of the shape and orientation of the target area, making it particularly lethal against formations of troops or vehicles that are lined up in the direction of the fire. This type of fire is highly effective and is often sought after in tactical situations because it increases the chances of inflicting damage on the enemy.

The other choices describe concepts that do not define enfilade fire. For example, it is not limited to point targets, nor does it inherently require significant changes in elevation to maintain aim. Additionally, enfilade fire is considered one of the most effective means of engaging an opponent, contrasting with the idea that it is the least effective class of fire.