My 'thing' is WW2 propaganda films such as "In which we Serve" and "Next of Kin", etc., and whatever others of the era. I have seen most similar US films on the subject, some good, some bad, but they tend to ham up the heroics and thus more of a conventional feature film. British films stay more on the propaganda and how we are going to win the war. German ones are most interesting but not speaking German is a problem but seeing shots in pre war Germany is worth it.
Brian.