Which key function relates to effectively delivering ordnance to targets?

The key function that effectively delivers ordnance to targets is "Engage." This term encompasses the entire process of targeting and hitting an intended target using ordnance, which includes identifying the target, calculating necessary parameters like range and wind, and executing the engagement through the weapon system. Engaging a target requires precise coordination of various systems and personnel to ensure successful delivery of firepower.

In the context of fire control, engaging means actively involving the weapon systems to perform their intended roles against specified targets. This includes initiating firing procedures, ensuring that guidance systems are properly aligned, and accurately timing the release of ordnance.

The other options, while important in different aspects of target management and operational readiness, do not specifically emphasize the act of effectively delivering ordnance. For instance, evaluating involves assessing the situation and the effectiveness of prior engagements, assigning refers to designating targets to specific weapon systems or personnel, and detecting pertains to identifying the presence of targets. Engaging, on the other hand, specifically focuses on the operational action taken to deliver ordnance, making it the correct choice in this context.