My apologies to everyone for posting in the wrong forum orginally - I'm a newbie!
Many fascintaing responses - and very informative. I just think it would be interesting and fun to play with that period machinery, tanks, etc. Trench warefare, etc., could be a bit of a challenge - but if anyone could do a playable, entertaining, and historically accurate game it's Battlefront. As you well know, this subject matter really hasn't been covered before (save for Dawn of Aces - same era at least). Thanks everyone...