As soon as it took Denmark it declared on Netherlands and again had too few units to destroy even one Dutch unit let alone occupy much territory. I could have easily flooded the country with units had I wanted to take advantage, but I refrained to keep things going in game.
It handled Belgium fine (Again declaring the very first turn after a surrender) as it is so close to the Netherlands, so no issue there.
The AI needs to wait to declare war until the entire border is garrisoned with units with full action points, that would go a long way to prevent a human from easily stopping an AI in its tracks in 39.
France needs major work. The AI attacked around April I think, and I refrained from sending any British units into France except for a few turns of fighter support before withdrawing them back to Britain. I have managed to hold the AI out of Paris and the game is now into January 1941 and Paris is still looking good even though this game is set on seasoned level of help for the AI. Again I think the main problem is lack of action by the AI (I downloaded a short patch this morning so I think I'm running the most current build).
Edit: Actually it's not so much lack of action, but lack of focused action. A player can use his entire airforce to prep a tough hex, the AI seems to rely on support missions only, which just isn't enough to break a tough hex like Copenhagen. Perhaps force the AI to keep 50% of its airforce on mission and use it on tough fights before any land attacks go in?
The AI does make multiple attacks now on the same hex, but it seems to take very heavy losses in most fights, so I assume it is making very low odds attacks. As of the current date Germany's land losses are 508 and all of the combined allies are slightly above that but nowhere close to 600 total yet so losses are pretty much even.
Here's a screenshot (had to reduce it by 50%) showing the situation, as you can see Germany's units are pretty low strength given that they have a seasoned experience buff of 12% experience for every unit that I set at game launch.
Not trying to be a pain here, just want to help make the AI better if possible.


