To a surrounded enemy, you must leave a way of escape.
This does not mean that the enemy is to be allowed to escape. The object is to make him believe that there is a road to safety, and thus prevent his fighting with the courage of despair. After that, you may crush him.
He who wishes to fight must first count the cost
There is no instance of a nation benefiting from prolonged warfare.
The line between disorder and order lies in logistics.
Knowledge of the enemy's dispositions can only be obtained from other men.