I want to consolidate all my comments:
First, this is an excellent scenario, however after my first attempt I made some changes to the game:
- The infantry west of Kopenhagen shouldn t be Norwegian, I changed them to Danish in my game
- I gave Amsterdam, Hamburg and Kopenhagen more culture, which resulted in moving the Danish borders north, which seems to fix the issue with Norway demanding Germany to retreat the mines in the North Sea.
- Some cities like Vienna does not have railroad in the city square (fixed that for all major cities), added railroad to Amsterdam (the were lots of good railroads in this area)
- Installed a City on the Canary islands (Spanish, size3) and transformed terrain to hills. The Canary islands were somewhat important for Spain in that era. [There were even rumors that the secret submarine shelters on Fuerteventura were used by Germany as well. (There are some German plane wrecks on an airfield in the south, saw them myself)]
- Moved most spanish subs to the Atlantic (both Canary Islands and the La Curuna area). As far as I know this better reflects reality, but I may be wrong here.
- Revamped Turkey to be tough to blitz, but no second Maginot line de luxe and added the historical railway which made Turkey important (I never understood why Hitler didn t invade Turkey). Terrain is still rough and favorable for the defending party.
- Aded some infantry for Mexico. They were week compared to the US but not an easy pushover like Denmark for Germany.
- Added infanry to Venezuela. Otherwise the US can buy a medium unit at Panama and take Caracas too easy
Things I feel that need improvement, but still unsure:
Turkish subs and British Cruisers in the eastern Med sea. They always caused war because of run overs. Perhaps England can use a destroyer here?
The British special fortresses on the English country side. They seem to distract the AI a little but are of little actual use. The savest way to invade the British islands is via Scotland, since the cities there are weak and badly defended. From there you can drive your Panzers savely to London without interaction with those fortresses. Plymouth is the only city protected by them. It takes the Luftwaffe some months to destroy the fortresses afterwards. However they all became elite that way.
Corsica is too tough, perhaps add another land tile for better invasion.
Crete is too easy to take for the Germans. In real life, Germany suffered heavy losses and abstained from taking other islands by paratroopers.
Same with Cyprus (in my last game this was the only city Italy was able to take over

)
Give the Italian AI the possibility to do something sensible. They always tend to come late in any theatre of war. While Italy gave a bad performance in WW2, the AI even turns out to be worse. Maybe give them lousy transports every few turns?