Which brief is also commonly referred to as an OPORD?

An OPORD, or Operations Order, is primarily associated with the "Mission" brief. This document outlines the military's overall intent and directives for operations. It provides detailed instructions on the mission's objectives, the forces involved, the logistical considerations, and the timeline for execution. By focusing on the mission, the OPORD ensures that all personnel understand their roles and responsibilities in achieving the objectives laid out.

In contrast, the other briefs such as "Information," "Intelligence," and "Decision" serve different purposes. The Information brief may disseminate knowledge and updates but does not encapsulate operational directives like the OPORD. The Intelligence brief focuses on the analysis of information gathered regarding the enemy and the operational environment, providing situational awareness rather than specific orders. Meanwhile, the Decision brief is aimed at presenting choices and recommendations for actions but does not itself prescribe a mission like an OPORD does. Thus, associating the OPORD specifically with the "Mission" brief reflects its key function in guiding military action.