Of course it depends on who you buy it from and what the stage of completion is. Normally you have the old engine and you return most of it as a "core" leaving you with the parts needed to get the new engine running. You will definitely need oil and filter and coolant.
You might also need mounts and or some gaskets as well as spark plugs. It depends.
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.