SUN TZU ON THE ART OF WAR
THE OLDEST MILITARY TREATISE IN THE WORLD Translated from the Chinese By LIONEL GILES,
M.A. (1910) Chapter 9: The Army on the March
1. 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.
2. Camp in high places, facing the sun. Do not climb heights in order to fight. So much
for mountain warfare.
3. After crossing a river, you should get far away from it.
4. When an invading force crosses a river in its onward march, do not advance to meet
it in mid-stream. It will be best to let half the army get across, and then deliver your
attack.
5. If you are anxious to fight, you should not go to meet the invader near a river
which he has to cross.
6. Moor your craft higher up than the enemy, and facing the sun. Do not move up-stream
to meet the enemy. So much for river warfare.
7. In crossing salt-marshes, your sole concern should be to get over them quickly,
without any delay.
8. If forced to fight in a salt-marsh, you should have water and grass near you, and
get your back to a clump of trees. So much for operations in salt-marches.
9. In dry, level country, take up an easily accessible position with rising ground to
your right and on your rear, so that the danger may be in front, and safety lie behind. So
much for campaigning in flat country.
10. These are the four useful branches of military knowledge which enabled the Yellow
Emperor to vanquish four several sovereigns.
11. All armies prefer high ground to low and sunny places to dark.
12. If you are careful of your men, and camp on hard ground, the army will be free from
disease of every kind, and this will spell victory.
13. When you come to a hill or a bank, occupy the sunny side, with the slope on your
right rear. Thus you will at once act for the benefit of your soldiers and utilize the
natural advantages of the ground.
14. When, in consequence of heavy rains up-country, a river which you wish to ford is
swollen and flecked with foam, you must wait until it subsides.
15. Country in which there are precipitous cliffs with torrents running between, deep
natural hollows, confined places, tangled thickets, quagmires and crevasses, should be
left with all possible speed and not approached.
16. While we keep away from such places, we should get the enemy to approach them;
while we face them, we should let the enemy have them on his rear.
17. If in the neighborhood of your camp there should be any hilly country, ponds
surrounded by aquatic grass, hollow basins filled with reeds, or woods with thick
undergrowth, they must be carefully routed out and searched; for these are places where
men in ambush or insidious spies are likely to be lurking.
18. When the enemy is close at hand and remains quiet, he is relying on the natural
strength of his position.
19. When he keeps aloof and tries to provoke a battle, he is anxious for the other side
to advance.
20. If his place of encampment is easy of access, he is tendering a bait.
21. Movement amongst the trees of a forest shows that the enemy is advancing. The
appearance of a number of screens in the midst of thick grass means that the enemy wants
to make us suspicious.
22. The rising of birds in their flight is the sign of an ambuscade. Startled beasts
indicate that a sudden attack is coming.
23. When there is dust rising in a high column, it is the sign of chariots advancing;
when the dust is low, but spread over a wide area, it betokens the approach of infantry.
When it branches out in different directions, it shows that parties have been sent to
collect firewood. A few clouds of dust moving to and fro signify that the army is
encamping.
24. 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.
25. When the light chariots come out first and take up a position on the wings, it is a
sign that the enemy is forming for battle.
26. Peace proposals unaccompanied by a sworn covenant indicate a plot.
27. When there is much running about and the soldiers fall into rank, it means that the
critical moment has come.
28. When some are seen advancing and some retreating, it is a lure.
29. When the soldiers stand leaning on their spears, they are faint from want of
food.
30. If those who are sent to draw water begin by drinking themselves, the army is
suffering from thirst.
31. If the enemy sees an advantage to be gained and makes no effort to secure it, the
soldiers are exhausted.
32. If birds gather on any spot, it is unoccupied. Clamor by night betokens
nervousness.
33. If there is disturbance in the camp, the general's authority is weak. If the
banners and flags are shifted about, sedition is afoot. If the officers are angry, it
means that the men are weary.
34. When an army feeds its horses with grain and kills its cattle for food, and when
the men do not hang their cooking-pots over the camp-fires, showing that they will not
return to their tents, you may know that they are determined to fight to the death.
35. The sight of men whispering together in small knots or speaking in subdued tones
points to disaffection amongst the rank and file.
36. Too frequent rewards signify that the enemy is at the end of his resources; too
many punishments betray a condition of dire distress.
37. To begin by bluster, but afterwards to take fright at the enemy's numbers, shows a
supreme lack of intelligence.
38. When envoys are sent with compliments in their mouths, it is a sign that the enemy
wishes for a truce.
39. If the enemy's troops march up angrily and remain facing ours for a long time
without either joining battle or taking themselves off again, the situation is one that
demands great vigilance and circumspection.
40. If our troops are no more in number than the enemy, that is amply sufficient; it
only means that no direct attack can be made. What we can do is simply to concentrate all
our available strength, keep a close watch on the enemy, and obtain reinforcements.
41. He who exercises no forethought but makes light of his opponents is sure to be
captured by them.
42. If soldiers are punished before they have grown attached to you, they will not
prove submissive; and, unless submissive, then will be practically useless. If, when the
soldiers have become attached to you, punishments are not enforced, they will still be
unless.
43. Therefore soldiers must be treated in the first instance with humanity, but kept
under control by means of iron discipline. This is a certain road to victory.
44. If in training soldiers commands are habitually enforced, the army will be
well-disciplined; if not, its discipline will be bad.
45. If a general shows confidence in his men but always insists on his
orders being obeyed, the gain will be mutual.
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