You could probably do one about Auschwitz. Seems like the type of place that could give you some good stories. Or experiments the Nazis carried out on people. Or the Nazis secret weapons programs.
Maybe, you should do one about the Japanese Internment Camps.
I'd suggest doing some research on WWII before deciding what you want to write about. If your pasta is going to be related to WWII, then a basic understanding of it is highly reccomended; you will need to know things like why the war happened, which countries were involved and when and why, a basic timeline of the events leading up the conclusion and so forth. It's not a simple subject and if you come into it not knowing what you're talking about, it won't be easy to create a quality story related to it.