If the enemy is taking his ease, he can harass him; 303 if well supplied with food, he can starve him out; 304 if quietly encamped, he can force him to move. 305

Appear at points which the enemy must hasten to defend; march swiftly to places where you are not expected. 306

An army may march great distances without distress, if it marches through country where the enemy is not. 307

You can be sure of succeeding in your attacks if you only attack places which are undefended. 308 You can ensure the safety of your defence if you only hold positions that cannot be attacked. 309