Then called Military Life Under the First Empire, it appeared in 1837 and at once enjoyed such success that copies became quite rare. Turned author, the onetime captain of the Grande Armée described his service with racy good humor. All its characters, from marshals of the Empire to buck privates, are depicted with an astonishing accuracy; the reader senses that they have really lived. If you like first hand accounts then this one should be on your list.
Military Life under Napoleon - The Memoirs of Captain Blaze
1995 Emperor's Press Chicago