行军第九IX. The Army on the March
孙子曰：凡处军相敌，绝山依谷，Sun Tzu said： We come now to the question of encamping the army， and observing signs of the enemy. Pass quickly over mountains， and keep in the neighborhood of valleys.
视生处高，战隆无登，此处山之军也。
Camp in high places， facing the sun. Do not climb heights in order to fight. So much for mountain warfare.
绝水必远水，After crossing a river， you should get far away from it.
客绝水而来，勿迎之于水内，令半渡而击之利，When an invading force crosses a river in its onward march， do not advance to meet i
