Which document is primarily used during the planning process in military operations?

The Operations Order (OPORD) is the primary document used during the planning process in military operations because it provides a comprehensive framework for executing a mission. The OPORD outlines the commander's intent, specifies tasks and responsibilities, and details the coordination necessary for successful mission execution. It is designed to communicate essential information about the operation, including the situation, mission, execution, sustainment, and command and signal.

This structured format assists leaders and soldiers in understanding their roles and the overall objectives of the operation. As a living document, it can be updated and refined as necessary throughout the planning and execution phases, ensuring that all personnel are operating with the most relevant and accurate information available.

Other documents like the Tactical Standing Order may provide relevant guidance but do not encapsulate the comprehensive planning details that the OPORD does. The Commander's Intent clarifies the desired end state and overarching goals but lacks the specific actionable details found within an OPORD. Similarly, the After Action Review focuses on assessing performance and lessons learned after an operation has been completed, rather than guiding the planning and execution of forthcoming missions.