What is the definition of WARNO in military terminology?

The correct answer is "Warning Order." In military terminology, a Warning Order is a preliminary notification issued to inform units of an impending operation or mission. It provides essential details about what is expected, what preparations need to be made, and the timeline for upcoming actions. The Warning Order serves as an initial directive that allows units to begin their plans and preparations even before the full details of the operation are finalized, ensuring that they can respond quickly and effectively once the full order is issued.

This proactive approach is critical in military operations, as it helps to streamline communication and aid in logistical planning. The efficient use of a Warning Order can significantly enhance operational readiness and coordination among units, ultimately contributing to mission success.