On War

On War is perhaps the greatest book ever written about war. Carl von Clausewitz, a Prussian soldier, had witnessed at first hand the immense destructive power of the French Revolutionary armies which swept across Europe between 1792 and 1815. His response was to write a comprehensive text covering every aspect of warfare.
On War is both a philosophical and practical work in which Clausewitz defines the essential nature of war, debates the qualities of the great commander, assesses the relative strengths of defensive and offensive warfare, and - in highly controversial passages - considers the relationship between war and politics. His arguments are illustrated with vivid examples drawn from the campaigns of Frederick the Great and Napoleon Bonaparte.