32 h 51 minAudiobook8 minSummaryRead it, hear it, the 15-minute summary, and print and large print at cost
Audiobook edition · 32 h 51 minPaperback · 6 × 9 in · printing soonHardcover · 6 × 9 in · printing soonAbout this book
What happens to a plan when fear, chance and violence enter the field?
In On War, Carl von Clausewitz asks what war really is, not how to win it by following rules. A Prussian officer who fights against Napoleon, he brings the pressure of combat into an unfinished study of power and judgment. His starting image is stark: two wrestlers, each trying to force the other to obey his will.
From that struggle, Clausewitz turns to politics, uncertainty and the gap between plans and practice. He explores why real wars stop short of extremes, why defense has strength, and what a commander needs when facts are poor. This is demanding, abstract argument rather than battle narrative: a way to examine decisions when clear answers are hardest to find.
What you’ll discover
- Politics behind the fighting Explore Clausewitz’s argument that war continues political activity through other means, rather than standing apart.
- Plans meet friction See why actions that look simple on paper become difficult amid fear, doubt and chance.
- Judgment over formulas Follow a theory meant to educate the mind, not supply a fixed recipe for victory.
- The limits of attack Consider why Clausewitz calls defense stronger, even though its aim is to preserve what exists.
- Minds under pressure Examine the qualities a commander needs when uncertainty and friction put every decision under strain.
Who will love it
This is for readers who enjoy sharp definitions, military history, politics and strategy, and anyone curious how a veteran of the Napoleonic wars thought about power, risk and decisions made without full information.
What’s inside
The key ideas, in the 15-minute summary
- War is a duel on a larger scale
- Pure logic pushes war toward extremes
- Real war is held back from the extreme
- War is politics carried on by other means
- Passion, chance and reason form war's trinity
- Courage and judgment guide action in fog
- Friction makes simple things hard
- Theory should train judgment, not give orders
- Strategy uses battle, numbers and moral force
- Defense is stronger, but attack must press on
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Della guerra
by Carl von Clausewitz · 1832
Two wrestlers grip each other, and a Prussian officer sees in them the whole of war.
ChallengingOver 20 hours to readItaliano
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In short
Why would a soldier who spent his life in campaigns insist that war is a tool and never a goal? Carl von Clausewitz, a Prussian officer who fought in the wars against Napoleon and later directed the war school in Berlin, spent about twelve years on On War.
From the 15-minute summary · Key idea 1
War is a duel on a larger scale
Clausewitz opens with a picture instead of a legal definition. Two wrestlers each use bodily force to make the other submit. War, he says, is the same contest multiplied across armies and nations.
From this he draws a plain definition. War is an act of violence meant to compel an opponent to do our will. Violence is the means, and the enemy's submission is the final object. To reach it, the enemy must be disarmed.
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Which edition is right for me
- 15-minute summary
- The key ideas of the whole book in about 8 minutes. A good first look, or a refresher.
Details
- First published
- 1832
- Language
- Italiano
- Reading time
- 21 h 25 min
- Level
- Challenging
Cite this edition
Clausewitz, Carl von. On War. Library of Alexandria, 2026, libraryofalexandria.com/products/on-war.
Clausewitz, C. von. (2026). On war. Library of Alexandria. https://libraryofalexandria.com/products/on-war (Original work published 1832)
Clausewitz, Carl von. On War. Library of Alexandria, 2026. https://libraryofalexandria.com/products/on-war.
@book{clausewitz2026war,
author = {Clausewitz, Carl von},
title = {On War},
publisher = {Library of Alexandria},
year = {2026},
url = {https://libraryofalexandria.com/products/on-war},
note = {First published 1832}
}
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What is On War by Clausewitz about?
It studies the nature of war and how to think about it. Clausewitz defines war as force used to compel an opponent, then examines politics, chance, friction, strategy, battle, defense and attack, using examples from Frederick the Great and Napoleon.
What does war is a continuation of politics mean?
It means war is a tool of policy and not a separate activity with its own aims. A state starts a war for a political purpose, and that purpose should guide how much force is used and when to stop.
What is the trinity in Clausewitz?
It is his picture of war as three tendencies at work together: hatred and violence, linked mostly to the people, chance and probability, linked to the general and army, and reason, linked to the government as the setting of political aims.
The author
Carl von Clausewitz
1780–1831 · Prussian military theorist
Carl von Clausewitz (1780–1831) was a Prussian general and military theorist. He was born in Burg, Prussia, and served in the Prussian and Russian armies during the Napoleonic wars. He wrote On War, which was published after his death, beginning in 1832. He died in Breslau, Prussia.
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