Much has been made of Napoleon's Marshals' personal rivalries, jealousies, greed and lust for power. They had every soldier's vices and virtues; the were glory-seeking, self-aggrandising and envious of social status. Napoleon's method of command was such that he expected his marshals to obey, not initiate; and he slowly set out to ensure that his senior officers became merely blind agents who executed his orders without hesitation, discussion or personal...