Economy of force is one of the nine Principles of War, based upon Carl von Clausewitz's approach to warfare. It is the principle of employing all available combat power in the most effective way possible, in an attempt to allocate a minimum of essential combat power to any secondary efforts. It is the judicious employment and distribution of forces towards the primary objective of any person's conflict.

No part of a force should ever be left without purpose. The allocation of available combat power to such tasks, like limited attacks, defense, delays, deception or even retrograde operations is measured, in order to achieve mass at decisive points elsewhere on the battlefield.

Carl von Clausewitz once said that "Every unnecessary expenditure of time, every unnecessary detour, is a waste of power, and therefore contrary to the principles of strategy."

The Principles of War are a part of United States Army doctrine. The current doctrinal manual for Army Operations is FM (Field Manual) 3-0, which defines, and describes, Economy of Force as follows: "Allocate minimum essential combat power to secondary efforts. Economy of force is the reciprocal of mass. It requires accepting prudent risk in selected areas to achieve superiority — overwhelming effects — in the decisive operation. Economy of force involves the discriminating employment and distribution of forces. Commanders never leave any element without a purpose. When the time comes to execute, all elements should have tasks to perform."

David Suzuki, CC, OBC (born March 24, 1936) is a Canadian academic, science broadcaster and environmental activist. Suzuki earned a Ph.D in zoology from the University of Chicago in 1961, and was a professor in the genetics department at the University of British Columbia from 1963 until his retirement in 2001. Since the mid-1970s, Suzuki has been known for his TV and radio series and books about nature and the environment. He is best known as host of the popular and long-running CBC Television science magazine, The Nature of Things, seen in over forty nations. He is also well known for criticizing governments for their lack of action to protect the environment.

A long time activist to reverse global climate change, Suzuki co-founded the David Suzuki Foundation in 1990, to work "to find ways for society to live in balance with the natural world that sustains us." The Foundation's priorities are: oceans and sustainable fishing, climate change and clean energy, sustainability, and Suzuki's Nature Challenge. He also served as a director of the Canadian Civil Liberties Association from 1982-1987.