Stratagem No. 18 第十八计 Attacking stratagems (攻战计)
To catch bandits, catch their leader
Literal
Catch the bandits, catch their king.
Break the one person or post the whole effort depends on, and the rest of the body loses its shape.
Source line
摧其坚，夺其魁，以解其体。龙战于野，其道穷也。
Traditional 摧其堅，奪其魁，以解其體。龍戰於野，其道窮也。
Crush their strong point and take their chief, and their body comes apart. Dragons fight in the wild. Their way is at an end.
Icons working translation — draft, pending review
The second sentence is the comment on the top line of the hexagram Kun (Earth): dragons fighting in the wild have reached the end of their course. When the leading strength is pulled into the open and taken, the formation that depended on it cannot continue. The line promises a collapse of structure, not a duel for its own sake.
三十六计 · Chinese Wikisource edition (public domain)
Meaning
To catch bandits, catch their leader means aiming at the person, the node or the post that holds the opposing effort together, rather than at the mass of that effort. A band of fighters without a chief they obey is a crowd. A project without the one approval it cannot replace is a pile of work. The classical line says to break the hard point and seize the chief, and then the body unties itself. You do not have to defeat every part. You have to defeat the part whose fall the other parts cannot survive.
The commentary adds a practical warning. Do not look for the leader by the banner alone. In a formed body, the chief is wherever the movement starts. Flags can be handed to a deputy, and a visible commander can be a decoy. Watch who moves first, who the others look to, who can halt the line by leaving it. The hexagram’s dragons in the wild are that exposed contest: once the leading power is out where it can be struck, its course is finishing. Kill the followers only, and the commentary’s phrase is that you have let the tiger back into the hills.
The story
Zhang Xun and Yin Ziqi at Suiyang, 757 睢阳之战
History
In 757 Zhang Xun and the prefect Xu Yuan were holding Suiyang against a large rebel army under Yin Ziqi. The city covered the approach to the south and the grain of the Huai. Zhang Xun’s problem, in the episode the stratagem commentary chooses, was not finding the enemy. It was finding Yin Ziqi inside his own command. The commentary describes a charge up to Yin’s standard, the camp in disorder, and officers cut down around it. The detail the New Book of Tang tells plainly is the one that followed. Zhang Xun was close enough to shoot the commander, and could not tell him from the men beside him.
He had arrows whittled from wormwood. Men who were hit were pleased, the history says, because they thought the defenders were down to sticks and out of real arrows, and they ran to report this to Yin Ziqi. The report identified him. Zhang Xun had the archer Nan Jiyun shoot. The arrow took Yin in the left eye. He was not captured. He pulled the army back. A chief who could not be recognised was as good as a chief who was not there. The wormwood was a question, and the answer walked to the man they needed.
The eye did not save Suiyang. Later in 757 the city fell, and Zhang Xun was killed. Catching, or in this case maiming, the leader bought a withdrawal and did not buy a victory. The stratagem claims that a body comes apart when the chief is taken. It does not claim that the chief’s side has no second army, no supply and no time. Suiyang is a good story of identification, and a bad story if it is told as a triumph. The defenders found their king. They still lost the city.
The wormwood arrows and Nan Jiyun’s shot are in the New Book of Tang’s biography of Zhang Xun; Suiyang fell later in 757 and Zhang Xun was killed.
Sources
- New Book of Tang 新唐书, biography of Zhang Xun 张巡
Myth check
The line catch the bandit by first catching the king is from a frontier ballad by the Tang poet Du Fu, Qian chusai, paired with shoot the horse before the rider. It is not a saying of Sun Tzu. The stratagem list took a poet’s couplet as a name.
Modern application
In a deal, a campaign or a product fight, the leader is often not the person whose name is on the door. It is the analyst who can stop a committee, the regulator who owns the file, the engineer without whom the launch does not ship. Effort poured on spokesmen and on junior opponents is the commentary’s tiger allowed back into the hills: you have won a great deal of noise and left the decision where it was. Finding that person is the wormwood arrow. A small, deniable test shows who the others run to.
Removing them is not the whole plan. The commander left the wall and the siege continued under the same rebellion. A strategy that identifies the chief and has nothing ready for the deputy, the process or the institution will spend its best shot on a pause. Take the leader, and at the same time take the thing the followers were about to do. Otherwise you have won a duel inside a war you have not touched.
Takeaways
- Find who the others look to, not who carries the banner.
- Spend the decisive effort on that person or that post.
- Be ready for the structure that remains after they fall.
How to counter it
Do not let outsiders see who you run to when something small goes wrong. Decoys, deputies and a decision path that does not pass through one visible person are how you stay uncaught.
Questions
What does to catch bandits, catch their leader mean?
It means breaking the person or the post that holds an opposing effort together, so the rest loses its shape. At Suiyang in 757 Zhang Xun could not recognise the rebel commander Yin Ziqi. Wormwood arrows, mistaken for a sign that the defenders were out of real arrows, led Yin’s own men to identify him. Nan Jiyun shot him in the left eye.
Is catch the leader first a Sun Tzu saying?
No. The famous couplet, shoot the rider by first shooting the horse, catch the bandit by first catching the king, is from Du Fu’s Tang ballad Qian chusai. The Thirty-Six Stratagems later use the second half as a title. The Art of War does talk about attacking where the enemy is weakest and about command, but this sentence is the poet’s.