I have had swon for some time now, and i now only make my own missions and senarios now, but since i got a new game I have started doing this stuff called modding(mabey your familyer with it). but as i was exploring some xml files i found that the creators of swon made some planes(secret wepons?) that they never added to the game; the ones that i found include:

a player flyable V-1 and 2 rockets as well as a wasserfall missle, a Bf110C-1, a N_Bf109, an He111, a Ju390, a val and kate,there is also a plane unkown to me as they just list it as a flitzer,i did some research and found that it is eather a small pre-WWI biplane, or a (Zwilling) or two air planes conected together type thing.

ther is a note above these plane saying i can add them to the game, i try, but it doesent work, the game fails. does any one have any past experience in modding and might be able help me out?