I play Aces High II, which seems to be the best. I haven't found one that comes close yet. Maybe old Air Warriors, but it shadows to AH2. www.flyaceshigh.com
Ace combat 6 fires of liberation and Ace combat 7 Assault horizon are preaty good along with Hawx 2, but flight sims like Il2 are some of my faves, needs alot of practice to keep you from turning into a lean mean flying machine into a pancake XD
The ace combat series aren't placed in the WWII era, though. But nonetheless, my favorite game by far. I think I posted a thread on it somewhere...