Can anyone help identify this song?

I heard this song on the radio years ago and I would really like to get it, but I don't know the name or artist. I do, however remember what it is about:

This song tells a story, similar to a Johnny Cash type song. It takes place during a war time, and is about a soldier who is injured, but who is rescued by another soldier. The rescued soldier finds out the next day that the soldier who rescued him had died a couple of days ago.

Its a neat twist to the story, the gist of it is that the soldier had been rescued by a ghost.

Please let me know if you have heard this song and have any clues to help me identify it.