German formations were in general larger. A Russian Corps was seldomly more than two divisions (in Guards they were often three though) and Armies were around 3 Corps while German Corps could contain up to 5 divisions and their Armies up to 5 Corps.

A Front was similar to an Army Group as Armies were collected into Fronts. But the Russian formations were less individual than their German counterparts. There were specific Artillery Armies and so on downwards, making the structure extremely top-heavy.