Who said "In combat, the unexpected often determines victory."?

This quote is attributed to Douglas Haig.

In combat, the unexpected often determines victory. - Douglas Haig

"In combat, the unexpected often determines victory."

Douglas Haig War

Military Field Marshal British 1861–1928

"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."

"Some battles are worth fighting."

"Sometimes you have to become the monster to stop the monsters."

"Skynet sent me back through time to kill you."

"War teaches us the value of peace."