Chapter 9 · The Army on the March · 行軍

Passage 9-9

軍旁有險阻, 潢井, 葭葦, 山林, 蘙薈者, 必謹復索之, 此伏姦之所也.

When the army’s flanks have difficult terrain, marshes, reeds, forests, or dense brush—search repeatedly and carefully. These are places for ambush and spies.

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These passages from other chapters connect to the themes in Passage 9-9:

Local Guides Passage 7-7 故不知諸侯之謀者, 不能豫交; 不知山林, 險阻, 沮澤之形... Know Enemy, Know Self (Extended) Passage 10-16 知吾卒之可以擊, 而不知敵之不可擊, 勝之半也; 知敵之可擊... Ground Dictates Behavior Passage 11-30 故兵之情, 圍則禦, 不得已則鬪, 過則從. 是故不知諸侯之... Stalemated Terrain Passage 10-3 可以往, 難以返, 曰; 掛; 掛形者, 敵無備, 出而勝之... The Six Terrain Types Passage 10-7 遠形者, 勢均, 難以挑戰, 戰而不利. 凡此六者, 地之道... Earth (地) Passage 1-5 地者, 遠近, 險易, 廣狹, 死生也.

More from Chapter 9: The Army on the March (行軍)

Passage 9-1: Sun Tzu said: When positioning the army to observe the enemy: Cross mountains an... Passage 9-2: After crossing rivers, move away from the water. When the enemy crosses toward y... Passage 9-3: If you seek battle, do not confront the enemy near water. Observe the terrain an... Passage 9-4: Cross wetlands swiftly—do not linger. If you must engage in wetlands, position n... Passage 9-5: On level ground, occupy easy terrain with high ground to the right and rear. Pos... Passage 9-6: Armies prefer high ground to low, favor sunlight over shade, nurture life and oc... Passage 9-7: This is how terrain aids the army. When upstream rains cause rushing currents, w... Passage 9-8: When terrain features deep ravines, enclosed basins, natural prisons, tangled un... Passage 9-10: When the enemy is near but quiet—he relies on difficult terrain. When distant an... Passage 9-11: Movement in the trees—the enemy approaches Many obstacles in the grass—suspicion... Passage 9-12: Reading dust: - High and sharp—chariots approaching - Low and wide—infantry appr... Passage 9-13: Humble words with increased preparations—advancing Aggressive words with forcefu... Passage 9-14: Rushing about and arranging chariots—preparing for decisive action Half advancin... Passage 9-15: Water-bearers drinking first—thirsty Seeing advantage but not advancing—exhauste... Passage 9-16: Night cries—fear Camp disturbance—general lacks authority Flags moving erratical... Passage 9-17: Hanging pots and not returning to quarters—desperate Earnest, rambling talks wit... Passage 9-18: First harsh, then fearful of troops—the height of incompetence Arriving with apo... Passage 9-19: Numbers alone do not guarantee victory. Avoid reckless advance. Unite forces, as... Passage 9-20: Punish troops before winning their loyalty—they will not submit; not submitting,... Passage 9-21: When orders are consistently enforced, the troops are trained to obey. When orde...