What is a common range of elevations used in firing the 81mm mortar?

The common range of elevations used in firing the 81mm mortar is typically between 40 to 90 degrees. This range allows for the necessary trajectory to effectively deliver rounds over varying distances and terrain. Mortars are designed to be fired in a high-angle system, which is why the elevation can be quite high, often exceeding 45 degrees. This high angle is particularly useful for engaging targets that are shielded by cover or located behind obstacles, allowing the mortar rounds to fall vertically onto the target area.

The chosen range of 40 to 90 degrees encompasses both the higher angles necessary for indirect fire and the flexibility required for targeting various distances, making it the most suitable answer in this context. Utilizing this range enables mortar teams to maximize their operational effectiveness in a variety of combat scenarios.