A spoof on American invasion of Iraq

A couple of months ago I saw an English film on tv...it was a hilarious spoof on American invasion of Iraq. The story went something like this- two American soldiers- one fat and the other sloppy looking who were to have gone to Iraq, get dropped over Mexico by mistake.

The soldiers of course think that they have landed in Iraq. So the first group of locals they see are interrogated by them about 'where the weapons of mass destruction' have been hidden. What follow are a series of funny situations. One of the soldiers falls in love with the daughter of a local tribal Chief etc...etc...

Unfortunately I could see only a part of the film and could not catch the tittle.

I would love to see the full film. Would any friend be knowing the name of this movie?