All warfare is based on deception. Hence, when we are able to attack, we must seem unable; when using our forces, we must appear inactive; when we are near, we must make the enemy believe we are far away; when far away, we must make him believe we are near.
If your enemy is secure at all points, be prepared for him. If he is in superior strength, evade him. If your opponent is temperamental, seek to irritate him. Pretend to be weak, that he may grow arrogant. If he is taking his ease, give him no rest. If his forces are united, separate them. If sovereign and subject are in accord, put division between them. Attack him where he is unprepared, appear where you are not expected .
It is a long-cherished tradition among a certain type of military thinker that huge casualties are the main thing. If they are on the other side then this is a valuable bonus.
"It's always better to attack than to defend," Coram had told her when they talked about fencing late at night. "Always. Ye don't win with defense--ye only hold the other feller off, or wear him down. Attack and have done with it!" --