Hey Doc, I know that there were a couple of groups that performed at Westover AFB in Chicopee a few years back. That airshow is usually held every two years. I don't know if the groups are still active though. They were static displays. They had a German and American camp with a few Gv's that you could poke around in. That was about 10 years ago. If I can find those pictures, I'll post them. Google it. Maybe you'll get lucky.
I do know that most of those re-enactor groups require that you purchase specific equipment to participate. The uniforms are usually replicas but they do pay close attention to details. That can become an expensive hobby. I knew a guy that was part of a non-profit group that refitted a DC-3 with OD green and invasion stripes for the new england area.
Either way, I'm sure they would be very helpful even if it's just to talk to them. Good luck.
Obie:aok