The Art of War, Chapter 4: 軍形 (Tactical Dispositions)

Chapter 3 ranked the ways of winning and put winning without a fight at the top. Chapter 4 asks what a commander must have in place to make that possible. The answer is a position that cannot be beaten, held while the opponent’s weakness is still to appear.

Like every chapter in this series, it has three parts: the reading, an analysis of what the chapter argues, and how finance professionals can interpret it in their own work. The original text follows the Chinese Wikisource edition of 《孫子兵法》. The Chinese and English explanations are Claude’s own paraphrase.

Reading the chapter

4.1

原文

孫子曰：昔之善戰者，先為不可勝，以待敵之可勝。不可勝在己，可勝在敵。

中文解說

孫子說：從前善於作戰的人，先使自己立於不會被打敗的地位，然後等待敵人出現可以被打敗的機會。不會被打敗，取決於自己；能不能打敗敵人，則取決於敵人。

English

Skilled fighters of the past first made themselves impossible to defeat. Then they waited for the enemy to become possible to defeat. Being unbeatable depends on you. Being beatable depends on the enemy.

The order matters. Securing your own position comes first, and it is the part you control.

4.2

原文

故善戰者，能為不可勝，不能使敵之必可勝。故曰：勝可知，而不可為。

中文解說

所以善於作戰的人，能夠做到自己不被打敗，卻不能保證敵人一定會被打敗。因此說：勝利可以預見，卻不能強求。

English

So a skilled fighter can make himself unbeatable, but cannot make the enemy certain to be beaten. Hence the saying: victory can be foreseen, but it cannot be forced.

This is a limit on what skill can promise. You can prepare the ground. You cannot order the opponent to make a mistake.

4.3

原文

不可勝者，守也；可勝者，攻也。守則不足，攻則有餘。

中文解說

要做到不被打敗，靠的是防守；要打敗敵人，靠的是進攻。採取防守，是因為力量不足；採取進攻，是因為力量有餘。

English

Being unbeatable is a matter of defence. Being able to beat the enemy is a matter of attack. Defend when strength is not enough. Attack when strength is more than enough.

4.4

原文

善守者，藏於九地之下；善攻者，動於九天之上，故能自保而全勝也。

中文解說

善於防守的人，像隱藏在深不可測的地底之下；善於進攻的人，像行動在高不可及的天空之上。所以既能保全自己，又能取得完整的勝利。

English

A skilled defender hides beneath the deepest earth. A skilled attacker moves above the highest heavens. In this way they can protect themselves and still win completely.

Both images describe concealment and range. Neither the defence nor the attack can be read by the other side.

4.5

原文

見勝不過衆人之所知，非善之善者也；戰勝而天下曰善，非善之善者也。故舉秋毫不為多力，見日月不為明目，聞雷霆不為聰耳。

中文解說

預見勝利如果不超過一般人所能知道的，就不算最高明；戰勝之後天下人都稱讚，也不算最高明。就像舉起一根秋天的細毛不算力氣大，看見太陽和月亮不算眼睛明亮，聽見雷霆不算耳朵靈敏。

English

Seeing a win that everyone else can see is not the highest skill. Winning a battle that the whole world praises is not the highest skill either. Lifting a strand of autumn down is no sign of strength. Seeing the sun and moon is no sign of sharp eyes. Hearing thunder is no sign of keen ears.

The test of skill is whether you saw something others had not yet seen.

4.6

原文

古之所謂善戰者，勝於易勝者也。故善戰者之勝也，無智名，無勇功。故其戰勝不忒。

中文解說

古時所說的善於作戰的人，是在容易取勝的情況下取勝的。所以善於作戰的人打了勝仗，既沒有聰明的名聲，也沒有勇敢的功績。因此他們的勝利不會出差錯。

English

What the ancients called a skilled fighter was one who won where winning was easy. So the skilled fighter's victories brought no fame for brilliance and no credit for courage. And his victories did not go wrong.

The passage describes wins that look unremarkable because the work was done before the contest.

4.7

原文

不忒者，其所措必勝，勝已敗者也。故善戰者，立於不敗之地，而不失敵之敗也。

中文解說

之所以不出差錯，是因為他所採取的措施必然取勝，他戰勝的是已經處於失敗地位的敵人。所以善於作戰的人，把自己放在不會失敗的地位，同時不放過敵人可以被擊敗的時機。

English

His victories did not go wrong because his moves were certain to win. He beat an enemy who was already losing. So the skilled fighter stands where he cannot be defeated, and does not miss the moment when the enemy can be.

There are two duties here. One is to hold a safe position. The other is to notice the opening when it comes.

4.8

原文

是故勝兵先勝而後求戰，敗兵先戰而後求勝。善用兵者，修道而保法，故能為勝敗之政。

中文解說

所以勝利的軍隊先具備了取勝的條件，然後才尋求交戰；失敗的軍隊先投入交戰，然後才設法求勝。善於用兵的人，修明政治、確保法制，所以能夠掌握勝敗的決定權。

English

A winning army wins first and then looks for the fight. A losing army fights first and then looks for the win. A skilled commander cultivates the way and upholds the rules, and so is able to govern the outcome.

The terms 道 and 法 echo Chapter 1. Here they are the base that makes the earlier preparation possible.

4.9

原文

兵法：一曰度，二曰量，三曰數，四曰稱，五曰勝。地生度，度生量，量生數，數生稱，稱生勝。

中文解說

兵法有五個步驟：第一是度，第二是量，第三是數，第四是稱，第五是勝。土地的情況產生「度」，「度」產生「量」，「量」產生「數」，「數」產生「稱」，「稱」產生「勝」。

English

The method has five steps: measure the ground, estimate the resources, calculate the numbers, compare the forces, and then victory. The ground gives rise to measurement. Measurement gives rise to estimation. Estimation gives rise to calculation. Calculation gives rise to comparison. Comparison gives rise to victory.

Commentators read the five terms in slightly different ways, and the exact sense of each is contested. The chain itself is clear: each step rests on the one before it.

4.10

原文

故勝兵若以鎰稱銖，敗兵若以銖稱鎰。勝者之戰民也，若決積水於千仞之溪者，形也。

中文解說

所以勝利的軍隊，好比用重的鎰去和輕的銖相比；失敗的軍隊，好比用輕的銖去和重的鎰相比。勝利者指揮軍隊作戰，就像在千仞高的山澗裡決開積蓄的水，勢不可擋，這就是「形」。

English

A winning army is like a heavy weight set against a light one. A losing army is like a light weight set against a heavy one. When the winner sends his people into battle, it is like releasing dammed water into a gorge a thousand fathoms deep. That is 形, the shape of the position.

The image is of force that was gathered in advance and is then released. The contest is decided by the balance that existed before it began.

Analysis: what the chapter argues

Secure yourself first. 4.1 separates what you control from what you do not. Being unbeatable depends on you. Being able to beat the enemy depends on the enemy. The skilled fighter starts with the part that is his own.

Victory can be foreseen but not forced. 4.2 sets the limit. Preparation can make a win likely, but it cannot make it certain. The sentence is a caution against treating a good position as a guaranteed result.

Defence and attack are two states of strength. 4.3 links defence to a shortage of strength and attack to a surplus. This is often read as advice to match posture to resources. Some readers take the line as saying that defence is a mark of weakness. The next passage argues against that: 4.4 praises both the hidden defender and the high attacker, and says that together they protect the force and complete the win.

Concealment helps both sides of the contest. The images in 4.4 are about being unreadable. A defender whose strength cannot be seen, and an attacker whose approach cannot be seen, both keep the other side guessing.

An obvious win is not proof of skill. 4.5 says that foreseeing what everyone can see, and winning what everyone praises, is not the highest level. The three comparisons are about ordinary perception: autumn down, the sun and moon, thunder. Skill shows when you act on something others have not yet recognised.

The best wins look dull. 4.6 says the skilled fighter wins where winning is easy, and so earns no reputation for brilliance or bravery. The work is done before the contest, so the contest itself shows nothing dramatic. There is a contested reading of 勝於易勝者: some take it as choosing easy opponents, others as making the contest easy by preparing. Both point to the same habit of not relying on drama.

Hold the position and watch for the opening. 4.7 gives two duties. Stand where you cannot be defeated. Do not miss the moment the enemy becomes beatable. The phrase 勝已敗者 says the enemy was already losing when the fight began.

Win first, fight second. 4.8 gives the sharpest contrast in the chapter. The winning side secures the conditions and then seeks battle. The losing side fights and then hopes. The same passage names 道 and 法, which links the chapter back to Chapter 1.

A chain from ground to victory. 4.9 lists five terms: 度, 量, 數, 稱, 勝. They are usually read as measure, estimate, calculate, compare and victory. The sense of each term is debated, and some editions and commentators gloss them differently. The structure is not in doubt. Each step is built on the one before.

Force is decided before it is used. 4.10 compares the winner to a heavy weight against a light one, and then to dammed water released down a gorge. The key word 形 is the shape of the position. The outcome is largely set by the balance that existed before the clash.

How finance professionals can read it

This section is Claude’s interpretation. Sun Tzu wrote about armies, and none of the mappings below are his. Chapter 3 ranked the ways to win. This chapter asks what position makes the better ways available, and warns against taking visible success for evidence of skill.

Investing

• Be hard to hurt before trying to gain. 4.1 maps to a portfolio that can survive a bad year: sensible position sizes, funding that does not force a sale, and limits on leverage. The analogy is that survival is the part you control.
• Margin of safety as 不可勝. Buying with a gap between the price paid and the estimate of value is one way of making yourself less beatable. The estimate can be wrong, so the gap is there for that reason. This is an analogy, not a rule.
• Accept that a good process does not guarantee a good result. 4.2 says victory can be foreseen but not forced. A sound decision can still lose money. Judge the process as well as the outcome, and do not size positions as if the result were certain.
• Match posture to resources. 4.3 can be read as saying that when capital, liquidity or conviction is thin, hold or reduce. When all three are ample, it is reasonable to press. The test is honest: ask whether the strength is real.
• Do not mistake a visible win for skill. 4.5 warns against crediting yourself for a result anyone could see, such as a rising market. Ask whether the gain came from a view that others lacked, or from conditions that lifted everything. Separate the market’s return from your own.
• Expect good investing to look dull. 4.6 suggests that careful work often produces wins nobody remarks on. Be wary of a record that depends on dramatic calls.
• Keep dry powder and watch for the opening. 4.7 asks you to stand safe and still notice when the price or the seller becomes beatable. That means waiting costs something, and the discipline is to wait on purpose.

Raising funds

• Fix your own house before going out. 4.1 and 4.8 favour winning first and then seeking the fight. For a raise, that means clean accounts, a clear plan, a data room that is ready and answers to the obvious questions before the first meeting.
• Know what you control. The company controls its preparation, its story and its numbers. It does not control investor appetite or the market window. 4.1 and 4.2 suggest putting effort into the first group and not counting on the second.
• Build runway so you are not forced. A company that must close in the next month negotiates from the 守 posture of 4.3 with nothing in reserve. Raising before the need is urgent keeps more options open.
• Be cautious about a hot round. 4.5 can be read as a reminder that a crowded, well-praised round is not proof of quality. Check the terms and the investors, not only the headline.
• Prepare, then let the process be quiet. 4.6 suggests that the best raises feel uneventful because the work came earlier. This is a reading by analogy.

M&A

• Finish the diligence before the bidding. 4.8 says the winning side wins first and then seeks the fight. For a buyer, that means knowing the target, the valuation range, the financing and the walk-away point before entering a process, not working them out under time pressure.
• Set the walk-away in advance. 4.7 asks for a position from which you cannot be defeated. A pre-agreed limit is one such position, because it stops a bidding contest from setting the price.
• Follow the chain to the price. 4.9 can be borrowed as a sequence: understand the ground (the industry and the target), estimate the resources (the standalone value and the financing), calculate the numbers (the synergies, costs and risks) and compare the forces (the alternatives, rival bidders and your own limits). Valuation sits at the end of that chain, not the start.
• Do not take a closed deal as proof of skill. 4.5 and 4.6 apply to a deal that was announced and praised. Its quality shows later, in integration and in whether the numbers held. Judge it then.
• Look for the already weakened counterparty. 4.7 describes beating an enemy who was already losing. A seller under pressure, or a business with a visible problem, may offer a better entry. Treat any such opening with care. Pressing a distressed counterparty raises legal, reputational and fairness questions that need advice from counsel and compliance.

Across all three

• Make yourself unbeatable first. For each decision, write down what would hurt you most and what you have done about it before asking what you could gain.
• Separate control from hope. List what is in your control and what depends on others. Spend effort on the first list.
• Test whether a win was skill. After a good result, ask whether you would have made the same call if you had known less about how it ended, and how much of the result came from conditions everyone shared.
• Size to the evidence. Since a win cannot be forced, position size and commitment should reflect that the estimate may be wrong.
• Look for the easy win. Prefer the situation that has been made easy through preparation to the one that needs brilliance or luck.

Questions to carry into the next chapter

Chapter 5 (兵勢) moves from the position to the momentum: how force, once gathered, is released and directed.

• What is the worst outcome of your current largest commitment, and what have you done to make it survivable?
• Which of your recent wins would you have had without the market or the cycle helping?
• When did you last make a decision that looked dull but left you hard to beat?