Quote by Douglas Haig

"The principle of economy of force requires using no more resources than necessary to achieve one's aim."

Douglas Haig
Military Field Marshal British 1861–1928

More from Douglas Haig

"I have not the smallest doubt that the credit of this war will eventually rest with the cavalry."
"The general who loses morale loses the battle."
"In any war, the morale of the troops is half the battle."
"Success in war depends upon the moral factor."

All quotes by Douglas Haig