steve and patrice, the european maps look fantastic. i just want to play now . . .
for the britain, n. germany & s. scandinavia one, it all looks good. i have some questions tho!
firstly, whether there should be a straits crossing between lubeck and the danish island hex to the northeast.
i checked on the German invasion of Denmark and German troops crossed on the mainland border in schleswig, landed from ship in Copenhagen, and took the air base in the north of the country by paratroop. they did not attempt to use the crossing from puttgarden (Lubeck hex) to Lolland and Falster islands, probably because there is a bridge between those two islands and yet another crossing after that, to Sjaelland/Zealand. it would have taken too long on the timescale the Germans were working to, with risk of delay if any of the ferries and bridges were disabled. if so they would need kriegsmarine support and if they had that they may as well go straight to copenhagen. which they did, as this operation was part of the larger 'operation weser' invasion of Norway.
but that does not mean there is not a ferry from lubeck/puttgarden to lolland island. it is about the same distance as the odense-sjaelland and lolland-langeland straits, and shorter than the copenhagen-malmo strait, all of which have crossing arrows.
in sweden, there could also be a crossing arrow from oland island, to the hex that kalmar would be in
also, i worry about scapa flow. surely the base for the main battle fleet had rail supply. according to
http://en.wikipedia.org/wiki/Far_North_Line there is a railway that ended at thurso on the coast opposite, with a ferry to the islands and "The line did become strategically important during World War I and World War II as part of a supply route for Scapa Flow, Orkney: Jellicoe's Express linked Thurso directly with London (Euston) and Portsmouth". there is probably a case for putting in the rail line from inverness to thurso and a crossing arrow from the mainland to scapa flow/orkneys.
regards
Mike