On War is one of the most important books ever written on the subject of war. Clausewitz, a Prussian officer who fought against the French during the Napoleonic Wars, sought to understand and analyze the phenomenon of war so that future leaders could conduct and win conflicts more effectively. He studied the human and social factors that affect outcomes, as well as the tactical and technological ones. He understood that war was a weapon of government, and that political purpose, chance, and enmity combine to shape its dynamics. On War continues to be read by military strategists, politicians, and others for its timeless insights. This abridged edition by Beatrice Heuser, using the acclaimed translation by Michael Howard and Peter Paret, selects the central books in which Clausewitz's views on the nature and theory of war are developed. Heuser's introduction explains the originality of Clausewitz's ideas, his education and background, and summarizes his key theories, while explanatory notes provide further information on the historical examples Clausewitz cites.