The whole post code is taken into account. Please run sample tests in my example here and see the difference between the markers yourself. We have been running these tests for a large UK based telecommunications company for some time now to get the exact grid reference from the lat,lng values and I can tell you that entering just the "outward code" (the first part) does not yield the exact results especially in a larger post code area.
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.