While the events in 'The Hobbit' take place before those in the LOTR books, you don't necessarily have to read them in that order. There are a few things that LOTR refers back to, but nothing that serious. As far as 'An Unexpected Journey' and 'The Desolation of Smaug' - the Hobbit is actually just one book, a fairly short one at that.
I was surprised that they broke it up into three movies because it probably could've been told in one. They did a good job though - and it gives the story a more thorough telling. If you compare 'The Hobbit' to the first two LOTR books, it's about half as thick, about the same length as the third LOTR book (Return of the King - with the second half basically filled with appendixes and history of various races).
You should go for the Hobbit first, the film series made it a prequel but the book doesn't have all the necessary links that were included in the film so I think the Hobbit would be a good place to start. The Desolation of Smaug is basically just the second part of the book 'The Hobbit', because the book is detailed they decided to make it into three films. Finally, you don't NEED to read The Hobbit to understand the Lord of The Rings, though I personally think it does help to read it :).
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.