Waohh!! Never had martial court for « neutrals »
Neutrals in OM are nothing like others SH.
Re-read Lurker thread, i know he is talking about them, and how they are handled in his mod...
It seems it’s up to the Kaleun to decide if a « neutral » has to be sunk.
After identification, look at the nav map what color their country towns/harbors have.
If it’s red, you can sink them, black you should not...
Double check when those countries entered in war with Germany (dates) to be sure.
Never had problem with that, even though you have to let go many ships. Soon or later you’ll encounter British
I kind of like the way we have to find the right ones