Prussia

The major German state that was a world power in the 18th and 19th centuries. Clausewitz was Prussian.

France

The nation which Napoleon led to many fantastic victories in the early 19th century.

The Battlefield

For Clausewitz, it is on the battlefield where every aspect of war is ultimately determined.

Friction

The many obstacles that pop up when applying theory to practice.

Strategy

The means to achieving the aim of war as a whole.

Tactics

The means to achieving victory in battle.

Military Genius

The set of character traits that make up the character of a great military commander.

Moral Powers

The spirit and energy of a leader, soldier or army which determines most of its effectiveness. Strong spirit and moral consciousness makes an army far more effective. With a broken spirit, no army can fight for long.

Battle

The actual, concrete acts of violence that comprise...