Zweiter Weltkrieg (2014)
English title: The Invasion: The Outbreak of WW2. This 90 minute documentary (broken into 2 parts in Australia) is a detailed look at what happened in Poland during WW2. Featuring interviews with German, Polish and Jewish survivors, it incorporates real footage and reenactments to detail a story that is virtually unknown outside of Poland. They were the first victims.
Zweiter Weltkrieg - watch online: stream, buy or rent
Currently you are able to watch "Zweiter Weltkrieg" streaming on Curiosity Stream, Magellan TV.