This movie is probably one of the best war films ever. It is in a Japanese prisoner of war camp and is based on a 1962 book by Ernest Gordon (a true-life survivor of the camps), The Miracle on the River Kwai, and is what Bridge on the River Kwai was made from.
However, this film is much more realistic. There are very cruel scenes with Japanese soldiers against prisoners of war and vice versa. But, the thing that is the best about this film is the message of forgiveness even in the worst of times.
I hope you can see it in America. It was released in 2001 and stars Kiefer Sutherland, Robert Carlyle, and Ciarán McMenamin.
This movie is on dvd in Japan right now and if you can watch Region 2 discs, I advise you to get it. Who knows when it might get to the United States.