Which of the following is NOT one of the three types of duties?

The correct answer identifies "Assigned" as not being one of the three recognized types of duties in a military context. In military terminology, duties are categorized into three primary types: specified, directed, and implied duties.

Specified duties refer to tasks that are explicitly outlined and detailed in regulations, orders, or directives. These are the responsibilities that a soldier is formally instructed to carry out.

Implied duties are those responsibilities that, while not explicitly stated, are understood as necessary to perform specified duties effectively. This means that certain actions are expected to be carried out as part of the comprehensive understanding of a soldier’s role.

Directed duties involve tasks assigned through direct orders from a higher authority, which can be immediate or temporary in nature.

"Assigned," while it sounds like it could fit within the framework of military duties, is not categorized in the same way as the aforementioned types. In this context, it lacks the formal recognition and definition that delineates it as a distinct type of duty alongside specified, directed, and implied.