== Some pointers == 

 There are so called wikiprojects, about nearly everything on wikipedia. Here are two that might be of interest. Wikipedia:WikiProject Military history and Wikipedia:WikiProject Soviet Union. I'm not sure how active they are and if posting requests there will receive much response, but you could have a look. 
 I also found this page, that you might already know about. It's just a page someone has made that lists losses according to various sources: . I don't think we can cite that page directly for anything, but it looks to me as a nice page to just check how the numbers are compared to other sources.  

 Now I have to be away for the rest of the day. I'm on a pub quiz team every friday that I can't let down. ;-).