However, I don't think anyone has ever reported the General Resource logo on a cargo transport in AC6. You might be the first to discover that! The only appearance I ever knew of General Resource in the game was through DLC, the F-117A -GENERAL EMBLEM-. Good find!
i took that from the page of General ressource united :
Grunder Industries was economically destabilized when the Razgriz destroyed their command center. After the Circum-Pacific War, Grunder Industries, through a series of larger mergers, would become General Resource Ltd.
I have found tha tglich due a challenge : Do the entire campaign with the cannon only .
For me grunder sell weapon to everyone on Strangereal . They are only interest by monney and revenge after have lost the Belkan war .
Generally speaking don't trust anything that refers to a subject from a later game, but in the Ace Combat 3 era. For example I believe at one point Osea and Yuktobania's history sections and timeline entries about their status during the "Usean Corporate War" were completely false. No information is ever given after AC3, and they hadn't been created yet when AC3 came out. Same for all the Grunder/GR and EASA/Neucom theories.
In this case that doesn't mean their false, and it makes sense, but its not quite confirmed either.