Whenever you station an army to observe an opponent, cut off the mountains and stay by the valleys.

Watch the light, stay on the heights. When fighting on a hill, do not climb. This applies to an army in the mountains.

When cut off by water, always stay away from the water. Do not meet them in the water; it is advantageous to let half of them cross and then attack them.

When you want to fight, do not face an enemy near water. Watch the light, stay in high places, do not face the current of the water. This applies to an army on water.

Go right through salt marshes, just go quickly and do not tarry. If you run into an army in the middle of a salt marsh, stay by the waterplants, with your back to the threes. This applies to an army in a salt marsh.

On a level plateau, take up positions where it is easy to maneuver, keeping higher land to your right rear, with low ground in front and high ground behind. This applies to an army on a plateau.

It was by taking advantage of the situation in these four basic ways that the Yellow Emperor overcame four lords.

Ordinarily, an army likes high places and dislikes low ground, values light and despises darkness.

Take care of physical health and stay where there are plenty of resources. When there is no sickness in the army, it is said to be invincible.

Where there are hills or embankments keep on their sunny side, with them to your right rear. This is an advantage to a military force, the help of the land.

When it rains upstream and froth is coming down on the current, if you want to cross, wait until it settles.

Whenever the terrain has impassable ravines, natural enclosures, natural prisons, natural traps, natural pitfalls, and natural clefts, you should leave quickly and not get near them. For myself, I keep away from these, so that opponents are nearer to them; I keep my face to these so that opponents have their backs to them.

When an army is traveling, if there is hilly territory with many steams and ponds or depressions overgrown with reeds, or wild forests with a luxuriant growth of plants and trees, it is imperative to search them carefully and thoroughly. For these afford stations for bushwhackers and spoilers.

When the enemy is near but still, he is resting on a natural stronghold. When he is far away but tries to provoke hostilities, he wants you to move forward. If his position is accessible, it is because that is advantageous to him.

When the trees move, the enemy is coming; when there are many blinds in the undergrowth, it is misdirection.

If birds start up, there are ambushers there. If the animals are frightened, there are attackers there. If dust rises high and sharp, vehicles are coming; if it is low and wide, footsoldiers are coming. Scattered wisps of smoke indicate woodcutters. Relatively small amounts of dust coming and going indicate setting up camp.

Those whose words are humble while they increase war preparations are going to advance. Those whose words are strong and who advance aggressively are going to retreat.

When light vehicles come out first and stay to the sides, they are going t set up a battle line.

Those who come seeking peace without a treaty are plotting.

Those who busily set out arrays of armed vehicles are expecting reinforcements.