Bob,
Those boys on the ground would not be making a two and half mile mistake in their location. The F.O. that was with they would have been the one who verified their position. Remenber, they were probablly headed for a night location or something. Would you want to be set up in the boonies and have your artillery support that far off target? I got to believe that the REMFer who made out the report was just filling in the blanks.