Best place to look through is the Eastern Front wikipedia page, look for names of places, operations or offensives where conflict took place.
http://en.wikipedia.org/wiki/Eastern_Front_(World_War_II)Also, there are current maps that need reworked imo. Just do what you want to do, we can rename maps, but I personally would like to do the larger, more famous battles justice with better maps (Kursk, Stalingrad, Prokhorovka, Kharkov, Orel, Smolensk etc etc etc etc) (Sorry to anybody who made those maps... not that they're bad, but we'd like them to be more competitive)
I actually think Smolensk is my map, it was renamed from Psel to Olshanka, then to Smolensk, and we haven't changed it back. But feel free to do anything.