Art of War (Barnes & Noble Classics Series) (34 page)

The conduct of war . . . consists in the planning and conduct of fighting. . . . [Fighting] consists of a greater or lesser number of single acts, each complete in itself, which . . . are called “engagements.” . . . This gives rise to the completely different activity of planning and executing these engagements themselves, and of coordinating each of them with the others in order to further the object of the war. One has been called tactics, and the other, stra-tegy.”
Carl von Clausewitz,
On War
(1832)
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 neighbourhood of valleys.
The idea is, not to linger among barren uplands, but to keep close to supplies of water and grass. . . . [Compare this to Wu Tzu, who says:] “Abide not in natural ovens”;
i.e
., “the openings of large valleys.” Chang Yü tells the following anecdote: “Wu-tu Ch’iang was a robber captain in the time of the Later Han, and Ma Yüan was sent to exterminate his gang. Ch’iang having found a refuge in the hills, Ma Yüan made no attempt to force a battle, but seized all the favourable positions commanding supplies of water and forage. Ch’iang was soon in such a desperate plight for want of provisions that he was forced to make a total surrender. He did not know the advantage of keeping in the neighbourhood of valleys.”
2. Camp in high places,
 
Not on high hills, but on knolls or hillocks elevated above the surrounding country.
facing the sun.
 
Tu Mu takes this to mean “facing south,” and Ch’ên Hao “facing east.”
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.
 
“In order to tempt the enemy to cross after you,” according to Ts’ao Kung, and also, says Chang Yü, “in order not to be impeded in your evolutions.”
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.
 
Li Ch’üan alludes to the great victory won by Han Hsin over Lung Chü at the Wei River . . . : “The two armies were drawn up on opposite sides of the river. In the night, Han Hsin ordered his men to take some ten thousand sacks filled with sand and construct a dam a little higher up. Then, leading half his army across, he attacked Lung Chü; but after a time, pretending to have failed in his attempt, he hastily withdrew to the other bank. “Lung Chü was much elated by this unlooked-for success, and exclaiming, “I felt sure that Han Hsin was really a coward!” he pursued him and began crossing the river in his turn. Han Hsin now sent a party to cut open the sandbags, thus releasing a great volume of water, which swept down and prevented the greater portion of Lung Chü’s army from getting across. He then turned upon the force which had been cut off, and annihilated it, Lung Chü himself being amongst the slain. The rest of the army, on the further bank, also scattered and fled in all directions.”
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.
 
Chang Yü has the note: “Said either of troops marshalled on the river-bank, or of boats anchored in the stream itself; in either case it is essential to be higher than the enemy and facing the sun.”
Do not move up-stream to meet the enemy.
 
Tu Mu says: “As water flows downwards, we must not pitch our camp on the lower reaches of a river, for fear the enemy should open the sluices and sweep us away in a flood. . . . Chu-ko Wu-hou has remarked that ‘in river warfare, we must not advance against the stream,’ which is as much as to say that our fleet must not be anchored below that of the enemy, for then they would be able to take advantage of the current and make short work of us.” There is also the danger, noted by other commentators, that the enemy may throw poison on the water to be carried down to us.
So much for river warfare.
7. In crossing salt-marshes, your sole concern should be to get over them quickly, without any delay.
 
Because of the lack of fresh water, the poor quality of the herbage, and last but not least, because they are low, flat, and exposed to attack.
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.
 
Li Ch’üan remarks that the ground is less likely to be treacherous where there are trees, while Tu Yu says that they will serve to protect the rear.
So much for operations in salt-marshes.
9. In dry, level country, take up an easily accessible position
 
Tu Mu explains it as “ground that is smooth and firm,” and therefore adapted for cavalry; Chang Yü as “level ground, free from depressions and hollows.” He adds later on that although Sun Tzu is discussing flat country, there will nevertheless be slight elevations and hillocks.

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