A family living in an old house is haunted by something. They think it's a ghost. Weird things started happening. The husband came back from the war and acts weird then he leaves again. At the end of the movie they saw tombs with they're own names. It turns out they are already dead and they're are the ones haunting the new owners of the house in present time.

I think the movie your thinking of is The Others starring Nicole Kidman

It's The Others!