US Army Field Manual on Leadership (1990) [pdf]
Nothing the military puts out on leadership should be taken very seriously because of the UCMJ and because unhappy people can't quit with serious repercussions.Anyone can make a team be productive when you can overwork people, if things don't get done you threaten to take their money and threaten a demotion, no one can quit to get away from you, and there is a steady stream of bodies to use.Civilian leaders have to actually balance keeping people happy and getting things done.