Someone didn’t do their homework.
Waging of War
In war, victory should be swift. If victory is slow, men tire, morale sags. Sieges exhaust strength; protracted campaigns strain the public treasury….
No nation has ever benefited from a protracted war….
The skillful warrior never conscripts troops a second time…
Supplying an army at a distance drains the public coffers and impoverishes the common people….
Strength is depleted on the battlefield; families at home are destitute….
In war, prize victory, not a protracted campaign.
From The Art of War by Sun Tzu, translated by John Minford, c 2002.