Chapter 12, Verse 1 - Sun Tzu

Sun Tzu said: There are five ways of attacking with fire. The first is to burn soldiers in their camp; the second is to burn stores; the third is to burn baggage trains; the fourth is to burn arsenals and magazines; the fifth is to hurl dropping fire amongst the enemy.
~ from The Art of War, Giles translation ~

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