For example, common doctrine is a form of control in that all leaders expect their subordinates to understand and apply the tenets of doctrine. Another common source of control is the use of graphics for operation overlays. While optional and situationally-dependent, these are restrictive and must be reviewed by the leader before implementation. Each control measure must have a specific purpose that contributes to mission accomplishment. If it dots not pass this purpose test, it unnecessarily restricts freedom of action and should not be used.
Control is necessary to synchronize the actions of elements participating in an operation.
The more complex the operation, the greater the amount of control needed. The challenge to leaders is to provide the minimal amount of control required and still allow for decentralized decision making in each situation. It recognizes that the subordinate is often the only person at the point of decision who can make an informed decision. Guided by the commander's intent, the mission, and the concept of the operation, the leader can make the right decision. Its purpose provides the basis for decision and allows freedom of action.