There was an excellent series on WWII produced in the early seventies by the BBC, I think. The opening had this doleful music with heartbreaking pictures of refugees and shell shocked kids during the blitz. I got most of my WWII history from that series. It’s been colorized and rerun recently.
I had seen that series - The World at War, narrated by Laurence Olivier - in the 70s and recently purchased it from Amazon on Blu-Ray. It's fantastic! At the time it was made some of the principals were still alive - Albert Speer for example - and are interviewed. I highly recommend it.
“World at War”
It is one of the best WWII documentaries ever made.
College kids should watch it if they have time.
2 outstanding series were “The World at War” and “Victory at Sea”.