This is a day-by-day video displaying the frontlines and territories of the major powers in WW2.
The video doesn’t run very fast, so I recommend going to the YouTube page, hitting the “Settings” button and playing it back at 2x speed. It’s too bad the map isn’t annotated with major events – like “Operation Barbarossa”, “Allies land in Italy”, or “Allies make landfall in Normandy”.
The guy who made this video has similar videos for other wars, as well (check out his page).