) One person did suggest that it may have been a "Twilight Zone" episode, but I remember it as a feature length film.I think, although it was set in WWII, it was made in the late 60s or early 70s.I must have asked a hundred people if they remember the film, but no luck. My father was watching it and I watched it with him. It is the story of a WWII Bomber and all the men were killed and one was under the plane, when the movie ended you found out they were all dead.This has been the only place where people have described the story the way I remember it. Sole Survivor is indeed the film in question, although you might not recognise it from its description in most databases.
I still don't know the name of the film and would love to know it.
If memory serves it may even have been directed by Steven Spielberg.
The crew of US airmen had crashed their WW2 plane when a bomb got stuck in the bomb bay.
this intriguing film is called "Sole Survivor", and was a TV movie made in 1970, directed by Paul Stanley and starring William Shatner.
This film had "haunted" me for years until I finally tracked the title down after many, many lengthy internet searches.