Free Sweden?
 

I'm playing with TWoS. It's the end of September, 1939. I've encountered a group of swedish merchant ships. The map is marking them red, rather than green. I looked up that type of ship in the recognition manual and among it's operators is "Free Sweden," whereas some other ships are operated by just regular ol' Sweden. I thought Sweden was neutral throughout the war?

if it's red, its dead BBY! Sink 'em all! Required reading to ease your conscience:D: https://www.konditori100.se/SiWW2/sww2lscs.htm "German Sub" was the leading cause (as indicated in site above) of death for Swedish shipping in WWII!

Well, I did catch them north of Denmark heading into the North Sea. No doubt with a hold full of iron ore for Britain! Looks like I'll have to make a quick pit stop in Wilhelmshaven before continuing to the East coast of England, because I'm about be be short on torpedoes.

TWoS has a bunch of hidden "Free" nations that do not show up in Museum and carry flags of their regular (neutral) counterparts, but are treated as enemy by the game. This way, if you see a neutral flagged ship that is obviously breaking neutrality rules (for example, by sailing in allied convoy or sailing darkened in British waters) you will not be penalized by the game for attacking it.