Chapter 3, Verses 12, 13, 14 and 15 - Sun Tzu

There are three ways in which a ruler can bring misfortune upon his army:-- (1) By commanding the army to advance or to retreat, being ignorant of the fact that it cannot obey. This is called hobbling the army. (2) By attempting to govern an army in the same way as he administers a kingdom, being ignorant of the conditions which obtain in an army. This causes restlessness in the soldier's minds. (3) By employing the officers of his army without discrimination, through ignorance of the military principle of adaptation to circumstances. This shakes the confidence of the soldiers.
~ from The Art of War, Giles translation ~

Go here to read the introductory post to the verses of The Art of War.