Why was the Navy ready to clear the skies over the Persian Gulf, yet surprised by the mines laid under it? Why is it that the Army is always prepared for war in Europe, but was caught off guard in Korea and Vietname? And why is the Air Force indifferent to "Star Wars"? In The Masks of War Carl H. Builder asks what motives lie behind the puzzling and often contradictory behavior of America's militay forces. The answer, he finds, has...