One negative I noticed. The soundtrack randomly went from spaghetti western to David Bowie. The Bowie fit, oddly, but I generally dislike the use of modern music in period pieces and the complete change in style makes it worse.
There's something else that bothered me. IMDB lists one character as "Winston Churchill." I'm guessing he's the fat guy that barely talks when Mike Myers debriefs the British officer. Having read half of a long biography of Winston Churchill, I think this character is completely wrong. If I learned anything, it's that Churchill was loquacious. Mayhap I'm wrong.