What type of fire is characterized by aiming along a fixed horizontal plane?

The type of fire characterized by aiming along a fixed horizontal plane is known as fixed fire. This method involves keeping the weapon or the aiming device stationary at a specific elevation and azimuth, allowing for a consistent and predictable trajectory when firing. It is essential in situations where the target is relatively static, and precision is necessary for targeting an area or engaging a specific enemy position effectively.

Fixed fire is used when the gunner doesn't need to adjust the elevation or traverse of the weapon continuously, making it suitable for engaging targets at a constant range while reducing the complexity of aiming. This approach ensures that rounds are consistently placed on target without the need for real-time adjustments as would be necessary in methods that require movement or adjustments to the weapon platform.