What type of fire involves significant changes in direction with minimal elevation change?

The type of fire that involves significant changes in direction with minimal elevation change is referred to as swinging traverse. This method of fire allows the gunner to engage multiple targets by moving the weapon left or right without altering the elevation. It is particularly effective when targets are spread across a wide area but are at roughly the same distance, enabling a quick response to moving or multiple targets.

In contrast, fixed fire generally refers to a scenario where the weapon is aimed at a stationary target and is not adjusted for direction once set. Sustained fire indicates a continuous or prolonged firing effort rather than the active adjustment of direction. Sweeping traverse involves a broader motion where the gunner may also adjust elevation but is not focused solely on significant changes in direction with minimal elevation change.