Actually, I wouldn't say that all US films brag that the US won the war, and increasingly I suspect that even most people in the States wouldn't think that entirely.
Take The Longest Day for example, with some fantastic British performances alongside the US forces.
Likewise in A Bridge Too Far, we have the US engineers in a key part in assisting the Armoured cores thrust to Arnhem ("Ever built a bailey bridge before? Well neither have I.")

I think both sides have fallen into a dangerous trap of nationalistic jingo, I mean, it's perfectly alright to consider your nations glorious history and pay tribute to it, I am somewhat partial to the days of the height of the Empire, however one must also give credit where credit is due, and that includes the parts when we worked together.
America can feel justifiably proud of the part it played in World War Two, and Britain can feel justifiably proud of holding off the Germans long enough for the US to boost our numbers and help us finish the job.
After all, as Churchill said 'Give us the tools and we'll finish the job', there was not a chance in hell that we could have gone into Europe alone, it would have been our undoing.
Together we took on the Third Reich, and together, and this includes our comrades in Russia, Together we took down one of the most sinister governments in history.
Squabbling about who killed who and who saved what will just serve to continue an undertone of bad feelings that will poison friendships, and then we will find ourselves standing alone again, and you know the old adage, strength in numbers. :03:

So it appears to have been a bad example, so sue me. The point I was trying to make however still stands.

Very well said/written. :up: