Originally posted by TUXC
Isn't the B25C with the strafer nose a field mod? What is the Firefly considered technically? I'm assuming the 17 pounder was not fitted in the USA where the tanks were made. Were all those extra guns fitted to the PTs from the factory as well? I'm thinking the unwritten "no field mods rule" applies mainly to one time or rare field mods and not ones that were common and saw service in numbers.
I should have said "one-off or experimental" field modifications. Others have pointed out where certain aircraft had experimental weapon configurations (gondolas and the like) that were never put into production / operational use.
The B-25 "field modifications" were so successful they were put into service and became "standard" configurations for several air units. The Firefly was modified in British factories IIRC, and again they became a standard issue item in Brit tank brigades. So, these are different than, say, wanting a Sherman with sandbags for augmented armor or a "bat bomb" that never saw service.
I fully admit I could be picking nits and/or remembering the rules incorrectly.
In the case of the jeep with the 75mm recoiless rifle -- I don't know, maybe there were such vehicles, or maybe the poster likes HUMMWVs with TOW missiles, and thinks there should be an equivalent in AH. If there were such vehicles, it would be nice to learn more about them. If someone is just saying "wouldn't it be cool if . . ." then I would have to say the request in all likelihood will never happen.