Napoleon has been criticized for lying in his post-battle reports, but it is absurd to ascribe conventional morality to these reports since disinformation has been an acknowledged weapon of war since the days of Sun-tzu. (Winston Churchill once observed that in wartime, truth is so precious that she needs to be defended by a bodyguard of lies.) Where Napoleon did err, however, was in making the exaggerations so endemic that in the end even genuine victories came to be disbelieved, or at least discounted; the phrase ‘to lie like a bulletin’ entered the French language. When
