Maybe The Last Kingdom? If so, it is based on a series of books by Bernard Cornwell- http://www.bernardcornwell.net/the-l...saxon-stories/

Cornwell is best known for his Richard Sharpe stories based on the British Army in India and during the Napoleonic wars in Portugal, Spain, and Belgium. He is an excellent historical fiction writer IMO and if you can get past the formulaic mode of his writing, and have a love for history, the books are well worth the read.

I haven't seen all of the film adaptation of his books. Most of them do a poor job of finding actors who actually look/sound anything like the characters in the books.