Just to elaborate on the elaboration.

Rating: 6/10 (14 February 2011)

First the elaboration, westenicho did some fine historical correction in his review I just want raise one point. The word decimate which features strongly in the blurbs for this movie is, as usual, used wrongly normally I would ignore it but not in this context. Decimate comes from Latin meaning "removal of a tenth", if the ninth had been decimated there would be 2,700 survivors not 7. Decimatio was a Roman punishment for troops/units guilty of cowardice where one in ten was executed.
The film itself was better than I expected with fewer errors in terrain than some others, though the mountains at the start looked more impressive than I was expecting.