Final answer:
Unplanned requests that are temporary and specifically tailored to a unique situation are called Ad hoc Assignments.
Step-by-step explanation:
Unplanned requests that are temporary and not issued on a permanent post order are defined as Ad hoc Assignments. These are tasks assigned to address a specific need or situation that is not part of the routine operations. The nature of ad hoc assignments is such that they are made as needed, often without the standard formalities of a regular job assignment. They differ from Emergency Protocols, which are procedures developed in response to crises, or Temporary Duty Orders, which often refer to somewhat longer-term, but still temporary, assignments. Special Operations Requests typically involve activities outside the scope of normal duties, planned in advance and requiring specific expertise or resources.