2-20. Task-organizing results in a task organization—a temporary grouping of forces designed to accomplish a particular mission. The unit’s task organization is stipulated in the base plan or order or addressed in Annex A (Task Organization) to the base plan or order. The OPLAN or OPORD also stipulates changes in the task organization by phase or event. During execution, commanders modify the task organization as required based on the situation through FRAGORDs. (See FM 6-0 for task organization formats in Army plans and orders.)