-—”Wars are won by making the cost of continuing it so great that the enemy stops fighting and surrenders.”-—
As General Sherman astutely observed, there’s little use trying to “reform” war. It’s terrible by definition, and the worse you make it, the sooner it’ll be over.
That was the American Way of War from the Civil War through 1945. Then we forgot this, and ended up with a lot of mixed results in Korea, Vietnam, Iraq, Afghanistan, etc.