What may result from failing to select proper shell fuze combinations?

Failing to select proper shell fuze combinations can lead to multiple issues that can severely impact the effectiveness of fire support operations. Each potential outcome of improper fuze selection is interconnected.

Firstly, undesired effects on target can occur when incorrect fuzes are used. For instance, using a fuze that detonates too early or too late may cause the shell to land outside of the intended impact area, resulting in collateral damage or failing to neutralize the target effectively.

Secondly, a reduction in desired effects on target can happen if the selected fuze does not create the optimal conditions for the ammunition type being used. This might occur if a fuze designed for a specific effect, such as airburst or point detonation, is not matched appropriately with the target type, leading to less effective engagement.

Lastly, excessive expenditure of ammunition can result when the wrong fuzes are used, as it may require multiple rounds to achieve the desired impact on a target because of either reduced effectiveness or undesired detonation.

By recognizing that all these outcomes can stem from improper fuze selection, it becomes clear that the cumulative consequences affect both mission success and resource management, hence all of the stated possibilities are valid results of such a mistake.