Factual error: The Hyundai rental car that Kramer and Douglas end up with is, at the newest, a 1989 model, which would be far too old to still be in fleet as a rental car.
Factual error: Following their re-equipping at the South Essex depot, Sharpe marches his battalion across the bridge towards London. However, every non-commissioned officer is aware that troops don't march across a bridge. They break step to avoid setting up harmonics that would collapse the structure.
Factual error: The movie takes place in 1925 but the uniform of the German fighter as well as the Zeppelin's markings are those of the Empire (gone 7 years ago).