Today marks the bicentennial of the culminating catastrophe that befell the Grande Armée as it retreated from Russia. This past weekend one of the French Emperor's descendants, Charles Napoleon, traveled to Minsk in Belarus to attend ceremonies commemorating the disaster at the nearby Beresina River crossing, where thousands died -- many by drowning -- in a final, panicked rout in freezing weather. Bonaparte had marched deep into Russia with nearly half a million soldiers; he returned with less than 25,000. Given that Napoleon was the great captain of his time -- perhaps of all time -- and that his armies...