Third, conviction. This is harder and deeper than physical courage. Your peers are the first to know what you will stand for and, more important, what you won’t stand for. Your troops catch on fast. State your flat-ass rules and stick to them. They shouldn’t come as a surprise to anyone. At the same time, leaven your professional passion with personal humility and compassion for your troops. Remember: As an officer, you need to win only one battle—for the hearts of your troops. Win their hearts and they will win the fights.