Looking for a ghost/horror story involving group of Vietnam vets pursued by ghosts from a Vietnamese cemetery. Locale is west coast USA, I believe.
Well if it's a short story, there is Robert McCammon's great story "Night Crawlers" that was also a episode of the New Twilight Zone.
Though I have a feeling you are either speaking of a Lucius Shepard or a Jack Cady story(both have done great Vietnam Horror/Ghost stories)
The Cady is called By Reason of Darkness and is in a Douglas E. Winter anthology called Prime Evil.
The Shepard could be"Graves" or "R n R".
All the stories are top of the line.