Economy of force
Notes: 

See also: Carl Von Clausewitz's Vom Krieg (On War)
J.F.C. Fuller's The Nine Principles of War.
Col. John Boyd's OODA loop (Observe, Orient, Decide, and Act) theory.

Further reading: Handel, Michael I. (2001). Robert Cowley, Geoffrey Parker (ed.). The Reader's Companion to Military History. Houghton Mifflin Harcourt. pp. 147–. ISBN 978-0-618-12742-9. Retrieved 6 September 2011.