In a target description, what measurement is required for a rectangular target?

In describing a rectangular target, it is essential to provide specific measurements that denote its size accurately. The correct choice emphasizes the necessity of knowing both the length and width of the rectangle. This information allows for a clear understanding of the target's dimensions, which is crucial in fire support and targeting operations to ensure proper engagement and impact.

In military terms, the length usually refers to the longer side of the rectangle, while the width describes the shorter side. By defining both these parameters, operators can effectively communicate the target's size, aiding in calculations for artillery fire, air strikes, or other support actions.

The other options do not apply to rectangular targets. For instance, radius and angle pertain to circular or arc targets, while elevation and altitude are more relevant to the vertical position of a target rather than its physical dimensions. Width and height, while they may seem relevant, do not accurately convey the length of the target, making length and width the precise requirements for a rectangular description.