On ground of intersecting highways, join hands with your allies.
Or perhaps, “form alliances with neighbouring states.”
No people on earth can be held, as a people, to be an enemy, for all humanity shares the common hunger for peace and fellowship and justice. No nation’s security and well-being can be lastingly achieved in isolation but only in effective cooperation with fellow-nations.
President Dwight David Eisenhower, “The Chance for Peace” (1953)
13. On serious ground, gather in plunder.
On this, Li Ch’üan has the following delicious note: “When an army penetrates far into the enemy’s country, care must be taken not to alienate the people by unjust treatment. Follow the example of the Han Emperor Kao Tsu, whose march into Ch’in territory [in 207 B.C.] was marked by no violation of women or looting of valuables. Thus he won the hearts of all. In the present passage, then, I think that the true reading must be, not ‘plunder,’ but ‘do not plunder.’ ” Alas, I fear that in this instance the worthy commentator’s feelings outran his judgment.
Tu Mu, at least, has no such illusions. He says: “When encamped on ‘serious ground,’ there being no inducement as yet to advance further, and no possibility of retreat, one ought to take measures for a protracted resistance by bringing in provisions from all sides, and keep a close watch on the enemy.”
In difficult ground, keep steadily on the march.
Or, in the words of chapter VIII, paragraph 2, “do not encamp.”
14. On hemmed-in ground, resort to stratagem.
Ts’ao Kung says: “Try the effect of some unusual artifice”; and Tu Yu amplifies this by saying: “In such a position, some scheme must be devised which will suit the circumstances, and if we can succeed in deluding the enemy, the peril may be escaped.” This is exactly what happened on the famous occasion when Hannibal was hemmed in among the mountains on the road to Casilinum, and to all appearances entrapped by the Dictator Fabius.
The stratagem which Hannibal devised to baffle his foes was remarkably like that which T’ien Tan had also employed with success exactly 62 years before. [See the note for chapter IX, paragraph 24.] When night came on, bundles of twigs were fastened to the horns of some 2000 oxen and set on fire, the terrified animals being then quickly driven along the mountain side towards the passes which were beset by the enemy. The strange spectacle of these rapidly moving lights so alarmed and discomfited the Romans that they withdrew from their position, and Hannibal’s army passed safely through the defile.
On desperate ground, fight.
For, as Chia Lin remarks, “if you fight with all your might, there is a chance of life; whereas death is certain if you cling to your corner.”
15. Those who were called skilful leaders of old knew how to drive a wedge between the enemy’s front and rear; to prevent co-operation between his large and small divisions; to hinder the good troops from rescuing the bad, the officers from rallying their men.
16. When the enemy’s men were scattered, they prevented them from concentrating; even when their forces were united, they managed to keep them in disorder.
17. When it was to their advantage, they made a forward move; when otherwise, they stopped still.
Mei Yao-ch’ên connects this with the foregoing: “Having succeeded in thus dislocating the enemy, they would push forward in order to secure any advantage to be gained; if there was no advantage to be gained, they would remain where they were.”
18. If asked how to cope with a great host of the enemy in orderly array and on the point of marching to the attack, I should say: “Begin by seizing something which your opponent holds dear; then he will be amenable to your will.”
Opinions differ as to what Sun Tzu had in mind. Ts’ao Kung thinks it is “some strategical advantage on which the enemy is depending.” Tu Mu says: “The three things which an enemy is anxious to do, and on the accomplishment of which his success depends, are: (1) to capture our favourable positions; (2) to ravage our cultivated land; (3) to guard his own communications.” Our object then must be to thwart his plans in these three directions and thus render him helpless.
But . . . I agree with Ch’ên Hao, who says [the text] does not refer only to strategical advantages, but is any person or thing that may happen to be of importance to the enemy. By boldly seizing the initiative in this way, you at once throw the other side on the defensive.
19. Rapidity is the essence of war:
According to Tu Mu, “this is a summary of leading principles in warfare,” and he adds: “These are the profoundest truths of military science, and the chief business of the general.”
The following anecdotes, told by Ho Shih, show the importance attached to speed by two of China’s greatest generals. In 227 A.D., Mêng Ta, governor of Hsin-ch’êng under the Wei Emperor Wên Ti, was meditating defection to the House of Shu, and had entered into correspondence with Chu-ko Liang, Prime Minister of that State. The Wei general Ssu-ma I was then military governor of Wan, and getting wind of Mêng Ta’s treachery, he at once set off with an army to anticipate his revolt, having previously cajoled him by a specious message of friendly import. Ssu-ma’s officers came to him and said: “If Mêng Ta has leagued himself with Wu and Shu, the matter should be thoroughly investigated before we make a move.” Ssu-ma I replied: “Mêng Ta is an unprincipled man, and we ought to go and punish him at once, while he is still wavering and before he has thrown off the mask.”
Then, by a series of forced marches, he brought his army under the walls of Hsin-ch’êng within the space of eight days. Now Mêng Ta had previously said in a letter to Chu-ko Liang: “Wan is 1200
li
from here. When the news of my revolt reaches Ssu-ma I, he will at once inform his Imperial Master, but it will be a whole month before any steps can be taken, and by that time my city will be well fortified. Besides, Ssu-ma I is sure not to come himself, and the generals that will be sent against us are not worth troubling about.” The next letter, however, was filled with consternation: “Though only eight days have passed since I threw off my allegiance, an army is already at the city-gates. What miraculous rapidity is this!” A fortnight later, Hsin-ch’êng had fallen and Mêng Ta had lost his head.