Who said "In warfare, as in life, adaptation is the key to survival."?

This quote is attributed to Douglas Haig.

In warfare, as in life, adaptation is the key to survival. - Douglas Haig

"In warfare, as in life, adaptation is the key to survival."

Douglas Haig Change

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."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."