To know your Enemy, you must become your Enemy.

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

When strong, avoid them. If of high morale, depress them. Seem humble to fill them with conceit. If at ease, exhaust them. If united, separate them. Attack their weaknesses. Emerge to their surprise.

Humble words and increased preparations are signs that the enemy is about to advance. Violent language and driving forward as if to the attack are signs that he will retreat.

Knowledge of the enemy's dispositions can only be obtained from other men.

In war, then, let your great object be victory, not lengthy campaigns.

Ponder and deliberate before you make a move.