What is the minimum deviation or range correction made while adjusting illumination?

The minimum deviation or range correction when adjusting illumination in artillery fire missions is typically 200 meters. This standard ensures that the effects of the illumination rounds are properly integrated with the target area, providing the necessary light over an extended area for both observation and tactical effectiveness. Adjustments made in increments of 200 meters allow for a more significant and manageable change in target illumination while avoiding excessive or insufficient adjustments that could impede mission effectiveness.

This value is informed by established artillery operational procedures that facilitate accurate and effective target engagement, particularly in low-light conditions where illumination is critical for visual acquisition of the target area. The larger increments help ensure that the rounds provide optimal coverage and assistance in the battlefield.