Carl Von Clausewitz's has been called, "Not simply the greatest, but the only truly great book On War." It is an extraordinary attempt to construct an all-embracing theory of how war works. Its coherence and ambition are...Carl Von Clausewitz's has been called, "Not simply the greatest, but the only truly great book On War." It is an extraordinary attempt to construct an all-embracing theory of how war works. Its coherence and ambition are unmatched by other military literature.