Sorry guys, I don't play Combat Mission (yet...) but I just had to log on to say I saw a plane as described here fly southwards over Bath at 9:45 on 18th April. We get planes flying to Bristol airport quite frequently and this one wasn't particularly loud so I sort of ignored it and then noticed it had turboprops. I shrugged and though it must be a Hercules. Then I noticed it had six engines and I checked the internet to confirm they only had four. Through that I found this thread and now I'm beginning to think I can't count either!
It's the exact same as Spanish Bombs described in the OP and BHoff later. A high wing, cargo/military round body and of course I can't remember the tail exactly. I am certain the extra props were not fuel pods. I noted that the wings beyond the outer props looked quite long. it does look eerily like that photoshopped C-130 above actually.
I'm not a plane buff either but I do look up. I worked in airports for a while so I can tell the major airliners at a glance and everyone loves a Vulcan but this one puzzles me. Airbus do the wings out in Bristol? Is there a 6-engine prototype A400m being made?
It didn't look or sound like an especially old airplane.