Excerpt from: FM 6-0 Mission Command: Command and Control of Army Forces – August 2003
RELEVANT INFORMATION SUBJECT CATEGORIES—METT-TC
B-10. Relevant information is all information of importance to the commander and staff in the exercise of command and control (FM 3-0 [Operations – February 2008]). In the context of information management, the six factors of METT-TC — Mission, Enemy, Terrain and weather, Troops and support available, Time available, and Civil considerations—make up the major subject categories into which relevant information is grouped for military operations. The commander and staff consider R[elevant] I[nformation] for each category in all military operations. The relative impact of each category may vary, but the commander and C2 [Command and Control] system consider them all.
B-11. The mission is the task, together with the purpose, that clearly indicates the action to be taken and the reason therefore (JP 1-02 [Department of Defense Dictionary of Military and Associated Terms]). It is always the first factor commanders consider during decisionmaking. (See FM 5-0 [The Operations Process – March 2010].) A thorough understanding of the mission focuses decisionmaking throughout the operations process. … Commanders and staffs view all the other factors of METT-TC in terms of their impact on mission accomplishment.
B-12. The mission statement defines the who, what, when, where, and why of the operation. A thorough understanding of why the unit is conducting an operation provides the focus for planning.
In every encounter there is an element of chance.
–John Hall, former head of the FBI Firearms Training Unit
The perils of Intervention are very high. The question I like to pose about mission definition is:
To whom does your primary duty and allegiance lie, a total stranger or your family?
That’s a moral decision I do not choose to answer for anyone else, only myself.