You say you want to use libxml2 and XPath, but you don't say what you need XPath (presumably libxml2's implementation of the XPath 1.0 spec) to do. You ask for sample code to parse the XML, but you don't say what you want to do with the information in the XML, so it's hard answer your question.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.