You can find it as "No Man's Land" or "Green Fields of France". Also a search for Eric Bogle would help in the search. I used Metacrawler for it 2 weeks ago, and found lots of links for it. Those were for other than the Digital Tradition version here.
NO MAN'S LAND/Green Fields of France/Willie McBride/Willy McBride
Stephen Suffet'sWILLIE MCBRIDE'S REPLY