Searching fire requires changes in what aspect related to the target?

Searching fire is primarily focused on adjusting the elevation to effectively engage targets that may not be precisely identified. When conducting searching fire, the intent is to find and hit targets that could be located in a general area, typically due to obscured visibility or when the target is moving or hidden.

By manipulating elevation, the operator can create a pattern of fire that can account for variances in height, ensuring that rounds can be directed above and below the presumed target area. This adjustment is crucial for maximizing the chances of hitting a target without the need for specific targeting information.

In contrast, direction, velocity, and location, while also relevant in the overall context of target engagement, do not directly pertain to the specific technique of searching fire like elevation does.