Who said "The officer who loses his nerve loses his army."?

This quote is attributed to Douglas Haig.

The officer who loses his nerve loses his army. - Douglas Haig

"The officer who loses his nerve loses his army."

Douglas Haig Courage

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."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

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