economy of force
Definition/Scope: (FM 3-0) The economy of force is to allocate minimum essential combat power to secondary efforts. Economy of force is the reciprocal of mass. Commanders allocate only the minimum combat power necessary to shaping and sustaining operations so they can mass combat power for the decisive operation. This requires accepting prudent risk. Taking calculated risks is inherent in conflict. Commanders never leave any unit without a purpose. When the time comes to execute, all units should have tasks to perform. OLD VERSION The judicious employment and distribution of forces.
Broader Terms:principles of war
Narrower Terms:shaping operation