The legend says (top to bottom):
Aldi South controlled region
Aldi North controlled region
Bombardment
Suspected troop movements
Just rename the Aldi Nord faction Trader Joe's and the Aldi Sud faction Aldi, and the Americans will get it too.
That's because it's built off of source and uses valve assets. A clone in godot would be in the clear. Problem is that it has to be built from the ground up, so it's lots more effort to make.
Make it different enough. They can't sue, unless they have patented the Team Fortress formula.