Help, this movie came out about a year and a half ago, don't know the names of the folks in it, but its about a husband or lover going off to war, its set in the early 1900s, there were two movies out around this time that were similar with both husbands going off to war and a family secret being revealed. I know this is not much to go on but I think maybe Keira Knightley was in the movie.
