I was browsing this thread the other day and started wondering if there were any Commonwealth graves here in Vietnam, from 1945 (British Army) or 1960s-1970s (ANZAC). So I went to the CWGC website and was amazed that you can only search their database by Casualty Name or Cemetary Name!
That would be great if I was looking up my relative Frederick Youens in the Railway Dugouts Cemetary, but not much use if I'm looking for graves in Vietnam.
However I found this site where an index has been organized starting with Country.
http://http://www.purecollector.com/history/cwgc/
A labour of love. Well done, Duncan McLeod
So I was able to discover that there are no Commonwealth graves in Vietnam. The nearest are in Thailand and Malaysia.