The Art of War

# The Art of War

Chapter 1: Laying Plans

War is a matter of vital importance to the state, so Sun Tzu insists it be decided in calculation before it is fought. Victory is won in the planning stage, and this opening chapter shows how to measure a situation before committing to it.

Sun Tzu names five constant factors to assess in every campaign:

Moral Law (Tao): whether the people are in complete accord with their ruler

Heaven and Earth: the weather, the season, and the nature of the ground

The Commander: his wisdom, sincerity, benevolence, courage, and strictness

Method and Discipline: organization, chain of command, and supply

Weigh these in the temple, the planning room, before the campaign begins, because all warfare is based on deception. As Sun Tzu puts it, many calculations lead to victory and few to defeat. The side that calculates more carefully, then acts on that calculation, wins before the first clash.

Try this: Before your next major decision, score each of the five factors from 1 to 5 and act only if the total favors you.

Chapter 2: Waging War

War is ruinously expensive, so the goal is to win quickly or not at all. Sun Tzu warns that prolonged campaigns drain the treasury and exhaust the people, and no nation has ever benefited from extended warfare.

The chapter's core rules are:

Swift victory: Long campaigns dull weapons, break morale, and empty the treasury, so press for a quick win.

Forage from the enemy: Feed your army on enemy land. A single cartload of their provisions is worth twenty of your own, which cuts the burden on your supply lines.

Turn prisoners: Treat captured soldiers well and put them to use, so the enemy's strength becomes yours.

Sun Tzu's logic is that a state cannot afford a war that outlasts its resources. A commander who wins fast protects both his army and his nation, and every day of delay adds cost that no victory can fully repay.

Try this: Before starting your next project, estimate its total cost in time and money, then set a firm deadline to finish it.

Chapter 3: Attack by Stratagem

Supreme excellence lies in breaking the enemy's resistance without fighting. Sun Tzu ranks attacks by cost, and attack by stratagem means striking the enemy's plans before his troops:

Attack his strategy first, disrupting his plans before they take shape.

Then his alliances, which he needs to stand against you.

Then his army in the field, the costlier option.

Besiege cities last, since sieges are slow and expensive.

Sun Tzu's five essentials for victory begin with knowing when to fight and when not to fight. He also notes that the commander who waits prepared for an unprepared enemy will win. The chapter's most quoted line is this: "If you know the enemy and know yourself, you need not fear the result of a hundred battles."

Try this: Before your next contest, list what your rival needs to keep going, then find one way to cut that supply without a head-on confrontation.

Chapter 4: Tactical Dispositions

Tactical dispositions are the foundation of victory: secure your own position before you act. Sun Tzu's core idea is that you can make yourself invincible, but you cannot force the enemy to be vulnerable. You control your readiness and wait for the enemy to expose a weakness.

Control your own position. The skillful fighter puts himself beyond the possibility of defeat.

Wait for the enemy's opening. Invincibility is yours to build; the chance to win depends on the enemy's error.

Win before you fight. Victorious armies win first and then seek battle. Defeated armies fight first and then look for victory.

Sun Tzu also lays out a chain of measurement, estimation, calculation, balancing of chances, and victory. Each step is done before the clash, so the outcome is largely settled in planning.

Try this: Before your next major decision, list the conditions you must secure to make defeat impossible, and act on the first one today.

Chapter 5: Energy

Energy is the momentum an army builds before it strikes, and you create it by combining two methods. The direct method (*cheng*) engages the enemy in the expected way, while the indirect method (*qi*) strikes from an unexpected direction. Sun Tzu observes that these two produce each other endlessly, like links in a ring with no end.

Three points carry the chapter:

Direct force fixes the enemy's attention.

Indirect force delivers the decisive blow.

Organization and signals let you command large forces as precisely as small ones.

Sun Tzu compares energy to a round stone rolling down a mountain. The shape and the slope do the work, so the force comes from setting up the situation in advance. Once released, the momentum is hard to stop.

Try this: Before your next important decision, name one expected move you will make and one unexpected move you can add.

Chapter 6: Weak Points and Strong

Whoever arrives first and chooses the ground holds the advantage. In Chapter 6 of *The Art of War*, Sun Tzu argues that initiative decides the outcome. Control where and when the fight happens, and the enemy's strength matters far less.

Sun Tzu's core tactics follow from this:

Be first on the field: Wait in position, fresh and ready, so the enemy must come to you on your terms.

Strike the unprepared: Appear where the enemy does not expect you, and attack where he is unguarded.

Be formless: Like water, take the shape the ground demands. As Sun Tzu puts it, "water shapes its course according to the ground."

Avoid his strong points and press where he is thin. Flexibility, not brute force, wins the contest.

Try this: Before your next major negotiation or competitive move, identify the one area where your rival is least prepared, and act there first.

Chapter 7: Maneuvering

Maneuvering is the hardest task in war, because the quickest route to an objective is rarely the straight one. Sun Tzu's answer is to turn the devious into the direct: make the roundabout approach the shortest path to victory, and turn misfortune into gain.

Three disciplines make this work:

Secrecy. "Let your plans be dark and impenetrable as night." Hide your intentions until the enemy cannot respond.

Signals. Gongs, drums, banners, and flags let a large force move as one, even when soldiers cannot see one another.

Timing. Avoid an enemy in high spirits. Strike when his morale is low.

The chapter's famous image describes the ideal moving army: swift as the wind, compact as the forest, in raiding and plundering like fire, and in stillness immovable as a mountain.

Try this: Before your next major move, map the indirect route you would take, then choose one visible signal your team will use to coordinate it.

Chapter 8: Variation in Tactics

The general must adapt to circumstances. In Chapter 8, Sun Tzu argues that variation is the mark of a capable commander. Fixed rules fail when conditions change, so the leader must be ready to depart from them.

He lists five situations where ordinary orders should be set aside: roads not to be followed, armies not to be attacked, cities not to be besieged, positions not to be contested, and commands of the sovereign not to be obeyed.

He then names the five dangerous faults that ruin a general. The first three are the most damaging:

Recklessness, which invites destruction.

Cowardice, which invites capture.

A hasty temper, which enemies can provoke with insults.

Delicacy of honor and over-solicitude for his men complete the list. The remedy is self-knowledge: a general who recognizes his own fault can correct it before the enemy exploits it.

Try this: Before your next major decision, write down one rule you normally follow and name the specific condition under which you would break it.

Chapter 9: The Army on the March

Armies are most exposed while they move, so Sun Tzu's ninth chapter teaches how to march, camp, and read the enemy's intentions before contact. The core idea is that discipline and observation keep an army safe on the road.

Camp on high ground, avoid low marshes, and cross rivers quickly rather than lingering on their banks. Sun Tzu's method for reading the enemy is practical:

Birds rising from a spot signal hidden troops or an ambush.

Tall, pointed dust means chariots are advancing; low, widespread dust means infantry.

Scattered dust shows the enemy is gathering firewood, while a few drifting clouds show it is making camp.

Sun Tzu also insists that soldiers be treated with humanity combined with firmness. Kindness without discipline breeds disorder, and discipline without humanity breeds resentment. Hold both, and the army moves as one.

Try this: Before your next major move, name three warning signs you will watch for and decide in advance what each one would mean.

Chapter 10: Terrain

Terrain determines how a battle can be fought, and the general who misreads it loses his army before the fighting starts. Sun Tzu's core point is that ground is a tool to be matched to your moves, and that most disasters come from the commander's choices rather than fate.

Know the six types of ground: accessible, entangling, temporizing, narrow passes, precipitous heights, and positions at great distance. Each one favors certain moves and punishes others.

Recognize the six calamities: flight, insubordination, collapse, ruin, disorganization, and rout. Sun Tzu traces each one to the general's failures, not to heaven.

Lead with care: "Regard your soldiers as your children, and they will follow you into the deepest valleys." Trust built through humane treatment lets an army hold difficult ground.

Sun Tzu's warning is clear: a general who understands the ground, and who looks after his men, can survive terrain that would destroy a careless army.

Try this: Before your next major decision, sketch the "terrain" of the situation: list the obstacles, the openings, and the points where your team could fall apart, then plan for each one.

Chapter 11: The Nine Situations

Chapter 11 holds that the ground you fight on determines how your army will behave, so a commander must recognize the situation and act to fit it. Sun Tzu names nine situations, from dispersive ground, where soldiers are likely to scatter and desert, to desperate ground, where there is no way out.

The chapter's key rules are:

On desperate ground, fight. Soldiers fight hardest when there is no escape.

On contentious ground, do not attack. Secure the strategic position first.

On serious ground, gather plunder so the army stays supplied.

Above all, move with speed, which Sun Tzu calls the essence of war.

He compares a well-run army to the shuai-jan, the snake of Mount Chang. Strike its head and its tail attacks; strike its tail and its head attacks; strike its middle and both ends respond. Every unit must support the others.

Try this: Before your next major decision, identify which situation it most resembles and write down the one action that situation demands.

Chapter 12: The Attack by Fire

Fire multiplies force, but only when you choose the right moment and keep your temper. Sun Tzu names five ways to attack with fire: burning enemy soldiers in their camp, burning their stores, burning their baggage trains, burning their arsenals, and dropping fire among their ranks. Each one succeeds or fails on conditions you must check first.

Conditions: Fire needs dry weather, a day when the wind is rising or likely to rise, and the proper materials at hand. Without them, the attack is a gamble.

Restraint: A ruler should never launch a war out of anger. Anger fades, but a destroyed kingdom cannot be restored.

Caution: The enlightened ruler is heedful, and the good general is full of caution.

Fire is a tool, not a reflex. Use it only when the terrain, weather, and your own emotional state all support the strike.

Try this: Before your next high-stakes decision, wait 24 hours and confirm the conditions still favor action before you commit.

Chapter 13: The Use of Spies

Chapter 13 makes one claim: foreknowledge decides wars, and it can only come from people. Sun Tzu rejects spirits, omens, and calculation as sources. Reliable intelligence comes from men who know the enemy's situation firsthand.

He calls the spy network the divine manipulation of the threads, and he names five classes of spies, which fall into four groups:

Local and inward spies: residents of enemy territory and officials inside the enemy's court

Converted spies: captured enemy agents whom you win over and use

Doomed spies: agents who carry false information and are expected to be caught

Surviving spies: agents who return with their reports

Spies are the most confidential relationship a commander holds, so reward them generously. Secrecy and gratitude keep the network alive. Sun Tzu cites Yi Chih, who served the Yin dynasty, and Lu Ya, who served the Zhou, as examples of agents who served as spies.

Try this: Before your next major decision, list what you know for certain about the other side, and write down the source of each fact.