Came across this guy's channel. Linking to the first video on the Eastern Front. He has done a nice job of animating the front, units and some other information, it is too much information to take in all at once. Watch the salients collapse and feel a little sick at the prospect of a group of people numbering as much as the population of a small American city becoming POWs slave labor or worse.
https://youtu.be/wu3p7dxrhl8I cannot really imagine what it would be like to be in all of that, it is so big.
