Quite amazing Russian website. If you cant read Russian, Google translate is your friend here.
This section: https://pamyat-naroda.ru/ops/ tracks the movement of Fronts, Armies, Corps, Division, Regiments and Commanders on the Eastern front throughout the course of the war. This appears to be based on Army reports. You can even see their positions on historical Soviet topographical maps. In some cases source documents are provided (some are translatable but some are just images). There are also diagrams of major attacks from a strategic perspective.
I wish there was something like this in English for the other Allies. If there was I guess we would have to pay for it.
This section: https://pamyat-naroda.ru/ops/ tracks the movement of Fronts, Armies, Corps, Division, Regiments and Commanders on the Eastern front throughout the course of the war. This appears to be based on Army reports. You can even see their positions on historical Soviet topographical maps. In some cases source documents are provided (some are translatable but some are just images). There are also diagrams of major attacks from a strategic perspective.
I wish there was something like this in English for the other Allies. If there was I guess we would have to pay for it.