This movie is an adaptation of the second book in the Flashman series by George MacDonald Fraser. This is an OK adaptation, but knowledge of the books would be a big help. Fraser was a British historian (he died early this year) and his books are full of British history. The Flashman books are written in the form of a series of memoirs by Sir Harry Flashman (fictional) about his service to the crown during the 19th century. Flashman is a cad, a bully, a womanizer, and a coward, but somehow he always gets out of the most dangerous situations (usually by running away) and seems to be a hero. So I would suggest reading the first two books in the series first - then see the movie.