My question is, how is the combat and realism in this game? Are there real people on the ground and air shooting at me or AI?
Welcome outofctrl,
To answer your questions, the combat and realism in this game is pretty good (what else would you expect to be said at the BBS of the game you are asking? hehe). HiTech tries to model all of the aircraft in game as accurately to their original, wartime, performance as he can find accurate sources for. There are definitely different feelings between the aircraft in IL2 and AH. Some are less forgiving, some more.
Yes, there are real people on the ground and the air shooting at you, but there are also some AI. When you get near a carrier task force, or near an airfield or strategic targets, usually you will find Anti-Air firing at you automatically. There is the ability to man some of those guns as well, so you may run into a mix of manual and automated AI gunnery defense.
Here in Aces High, your kills are not voided due to a crash. HOWEVER, there is a scoring system which IS affected, as well as a perk system. The perk system is kind of like AH's "money". There are a few very powerful aircraft that have a cost associated (such as the ME-262). When you kill another aircraft, you earn perks. If you land on the runway, you get to keep 100% of what you earn. If you land 2 or more kills in a single flight, a message pops up that everyone can see stating "Outfctrl has landed X kills as a member of ?? squadron".
Hope that helps answer a couple of questions. There is a free 2 week trial available, and I HIGHLY recommend getting in touch with the trainers. They can be excellent sources of information on not only how to fly, but other info on how the game runs.