Describe the purpose of a gunner's sight in firing operations.

The gunner's sight is a critical component in the firing operations of howitzers, specifically designed to improve accuracy during target engagement. Its primary purpose is to provide a means for the gunner to align the weapon accurately with the intended target, ensuring that shots are fired with precision. The sight enables the gunner to correctly determine the elevation and azimuth adjustments necessary to account for distance and other external factors affecting the projectile's trajectory.

While the other options touch on important aspects of artillery operations, they do not directly relate to the function of the gunner's sight. Logistical planning, measuring target distance, and calculating ammunition needs are essential elements of the overall artillery mission but serve different roles in the process. The gunner's sight specifically facilitates aiming, making it indispensable for achieving accurate fire on targets.