What is the standard adjustment for both elevation and deflection?

The standard adjustment for both elevation and deflection aligns with the principle of ensuring that fire is effectively and accurately directed toward the intended target. The correct approach is to make adjustments that account for potential discrepancies in targeting, which is crucial for increasing the likelihood of hitting the intended area.

By stating that the adjustment is "not less than 1/2 of the target form, and no more than one target form", it emphasizes a balanced strategy in making adjustments. This range allows for sufficient correction without overshooting the target area, ensuring that adjustments are neither too minor to be effective nor too extreme to go off-target. It recognizes the variability in fire conditions and the need for flexibility in targeting efforts.

The other options do not provide adequate guidelines for adjustment. For instance, adjustments of a quarter target form may not provide enough leeway in scenarios where the target is moving or when external factors are influencing the trajectory of fire. Similarly, stating that adjustments should equal the target size or be a full target form do not account for the dynamic nature of engagement scenarios, where precise and varied adjustments are often necessary to account for real-time conditions.