Final answer:
The purpose of this principle of war is to create opportunities for unexpected advantages by using tactics such as deception and attacking where the enemy is unprepared.
Step-by-step explanation:
The purpose of this principle of war is to create opportunities for unexpected advantages. It is not about ensuring that the enemy is always at a disadvantage or never acquiring an unexpected advantage. Instead, this principle focuses on using tactics such as deception, feigning disorder, and attacking where the enemy is unprepared or not expected to create opportunities for the attacking force to gain unexpected advantages over the enemy.