Napoleon fenced. So did Shakespeare, Karl Marx, Grace Kelly, and President Truman, who would cross swords with Bess after school. Lincoln was a canny dueler. Ignatius Loyola challenged a man to a duel for denying Christ's divinity (and won). Less successful, but no less enthusiastic, was Mussolini, who would tell his wife he was "off to get spaghetti," their code to avoid alarming the children. By the Sword is an epic history of sword fighting-a science,...

Two Washington Post correspondents present a thorough examination of the persons, politics, and legal factors involved in Agnew's resignation.