What rule is used for deflections in mortar operations?

The Left Add Right Subtract (LARS) rule is fundamental in mortar operations, particularly for applying deflections when engaging targets. This rule assists in determining the necessary adjustments to the mortar’s direction based on the relationship between the observer's position and the target.

When using the LARS rule, if the target is to the left of the original line of fire, the adjustment requires adding to the deflection. Conversely, if the target is on the right, the correction is achieved by subtracting from the deflection. This systematic approach simplifies the decision-making process in artillery operations, ensuring that mortars can accurately target positions based on the observer’s calculations and positional awareness.

Integrating the LARS rule into mortar practice ensures that operators can effectively engage targets while accounting for battlefield dynamics such as terrain changes and wind effects. Understanding this rule is essential for maximizing the efficacy of mortar fire support.