Take advantage of the enemy’s internecine fight and make use of its weakness and lack of judgment. Sui: At nightfall, return home to rest.

A regular element in offensive operations, surprise can be effected by the deception of the enemy as well as the mobility of one’ own troops. A cautious commander understands that, in general, deception can be employed but not relied on. Namely, he can hope to gain advantage if the deception works but must be prepared for its failure. However, he may be willing to take a greater risk if the enemy forces become disorderly due to internal strife; at this, he can plan a surprise attack that depends entirely on deception. In a typical employment of this strategy, one dresses his forces in the enemy’s uniforms, penetrates into its territory and attacks its vulnerable.