Who said "A commander's credibility is his most valuable asset."?

This quote is attributed to William Westmoreland.

A commander's credibility is his most valuable asset. - William Westmoreland

"A commander's credibility is his most valuable asset."

William Westmoreland Leadership

Military General American 1914–2005

"We are not going to tuck tail and leave Vietnam until the Communists have stopped fighting."

"Success is not final, failure is not fatal: it is the courage to continue that counts."

"The soldier is the backbone of any military force."

"You must have the courage of your convictions."

"A leader must be fair and just."

"Integrity is everything."

"One must take responsibility for one's environment."

"In this house, I make the decisions"