This one is called OpCenter. I originally made a small version of it for UT, it played good, so i decided to remake it for moh and along the way i added a bunch of stuff to it. It's a decent size facility with hangars, storage areas, briefing rooms, library, roof access and more. Should be good even with 40 players. Easy access to all areas as long as you remember: down = hangars , up = roof , and most of the battle is in between. Allies start in the hangars & in the halls, axis start at the opposite side of the halls & roof. Frag on!
http://www.viziongrafx.com/moh/