Defeat the enemies strategy.

Therefore, just as water retains no constant shape, so in warfare there are no constant conditions.

If asked how to cope with a great host of the enemy in orderly array and on the point of marching to the attack, I should say: "Begin by seizing something which your opponent holds dear; then he will be amenable to your will." Rapidity is the essence of war: take advantage of the enemy's unreadiness, make your way by unexpected routes, and attack unguarded spots.

Do not press an enemy at bay.

In executing an Artful Strategy: When ten times greater, surround them; When five times greater, attack them; When two times greater, scatter them. If the opponent is ready to challenge: When fewer in number, be ready to evade them; When unequal to the match, be ready to avoid them. Even when the smaller opponents have a strong position, the larger opponent will capture them.

Bring war material with you from home, but forage on the enemy... use the conquered foe to augment one's own strength.

The enlightened ruler is heedful, and the good general full of caution.