I do think that there is often an overlap between true crime writing and crime fiction. For example, the diary of a serial killer has been published in France – let’s hope no one buys it. And there are novels written as if trying to make the reader believe that they are true stories.
(I think this is partly linked to the huge success of movies like The Blair Witch Project, which was shot to look like a documentary put together from actual footage). Some killers even find that their crime has been fictionalised and they are able to read their own story written up as a novel whilst still in jail. All those tendencies blur the frontier between fiction and reality.
More.
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.