ABSTRACT
In general, in warfare what is referred to as the "unorthodox" means attacking where the enemy is not prepared and going forth when they do not expect it. When engaging an enemy, frighten them in the front and overwhelm them in the rear, penetrate the east and strike in the west, causing them never to know where to mount defensive preparations. In this fashion you will be victorious. A tactical principle from the Questions and Replies states: "When the enemy is vacuous, then I must be unorthodox."
