Which among the following choices represents an example of implied duty?

Maintaining proper equipment is an example of implied duty because it reflects a responsibility that is generally understood within the military context, even if it is not explicitly stated as a formal order. Every soldier knows that proper equipment maintenance is essential for operational readiness and safety, and it is typically assumed that all personnel will take initiative in ensuring that their gear is in good condition.

In contrast, completing training requirements and following direct orders are concrete responsibilities that are clearly outlined and mandated within military regulations. These expectations are documented and specified in official directives. Getting promoted, on the other hand, is a result of meeting established performance criteria and timelines, rather than an ongoing duty or responsibility that one fulfills on a daily basis.