I have no idea how a film starring the accomplished Robert Donat and a superb supporting cast could be disappointing, but it was. The film seemed to move in fits and starts, with Donat and Morley jabbing for 15 rounds. Napoleon was more energetic than either of them. He was well-played by Inspector Clouseau's boss, Herbert Lom.
We follow the rise of young Mr. Pitt, who ages rapidly into poor health and premature retirement during the conflict of England and France during the Napoleonic period. During this time, the US was a staunch ally of France, which was a major reason for the War of 1812.
We follow the victories of Lord Nelson on the seas, but there is no mention of Cromwell or Waterloo. The film was understandably talky (as that is what politicians do), but a few more examiniations of the military engagements would have been much more interesting.