What command relationship involves units being placed in an organization in a relatively permanent manner?

The command relationship that involves units being placed in an organization in a relatively permanent manner is known as "assign." This term is used to describe a situation where a unit is given a specific role within a command structure that is intended to be more enduring than temporary arrangements. The concept of assignment indicates that the assigned unit will operate under the command of the higher headquarters and will maintain its command integrity and capabilities while fulfilling its designated missions.

In contrast, the other terms refer to different types of command relationships. "Organic" pertains to units that are naturally part of a higher unit's structure due to their permanent assignment, such as artillery units that are assigned to a brigade. "Attach" describes a more temporary relationship where units can be placed under the command of another unit for a specific mission or short timeframe, without a long-term commitment. "Task" involves assigning a specific task or mission to a unit, which may not necessarily involve an enduring relationship or structural placement within the larger command.

Understanding these distinctions is crucial for effective command and control within military operations and helps in grasping how forces are organized and utilized in various scenarios.