A while back, I met a Jewish gentleman - Holocaust survivor - who spoke at length about displaced persons camps in Europe after World War II. I was fascinated and continued my research after that.
I'm now working on a mystery story that is turning into a novel length manuscript set in such a camp.
Here's my question or problem. The camps were often a huge mix of various European ethnicities, especially Eastern European since the U.S. promised not to force displaced persons to return to Soviet dominated countries.
So my question is ... dialects and accents. What are your thoughts and advice on handling these things? I'm trying to research speech patterns and colloquialisms of the day to help use language to differentiate a couple different ethnic groups, but I don't know if it will be enough.
I know there are some writers who handle such things with great skill. I'm not sure I'm one of those, but I'm also not sure if straight forward, more conversational English, which is how I normally write fiction, will work in the dialogue of this story.
Thoughts, advice and input appreciated.