What is the primary purpose of an Operations Order (OPORD) in joint fire missions?

The primary purpose of an Operations Order (OPORD) in joint fire missions is to communicate the plan, objectives, and coordination measures for fire support. An OPORD serves as a crucial document that outlines the intent of the commander, detailing how the operation will be executed. It includes essential elements such as the situation, mission, execution, sustainment, and command and signal aspects, ensuring that all involved units understand their roles and responsibilities in the operation. This clear communication is vital for successful joint operations, allowing different branches to effectively coordinate their firepower and support efforts to achieve the overarching mission objectives.