>>Do we put the flags of former enemies on their graves in our country? I would imagine there are som POW graves or British soldiers in the country? While I would think a swastika would be inappropriate, I would have no issue with a German flag, nor the Union Jack. Nor would I think putting a CSA flag on their graves to be an issue.<<
Yes, there are British flags on the graves of British soldiers who died at Lexington & Concord and are buried there:
http://www.firstthings.com/blogs/firstthoughts/2010/11/the-grave-of-a-british-soldier
More pictures here:
http://historyofmassachusetts.org/where-did-the-shot-heard-round-the-world-happen/
http://www.a-sense-of-place.com/2012/02/concord-ma-in-photos.html/concord-ma-in-photos6
Thanks.