As Germany, I have been investing in 3 forts per turn to build the Atlantic Wall since the fall of France. Thus, the large number of fortifications along the Atlantic. Most of the Luftwaffe was recently sent to Genoa to chase the Allied fleets out of the Mediterranean.
Will these moves serve to keep the Western Allies at bay? Or will they draw too many resources from the Eastern Front? Only time will tell.
The great part of a war game like this is that you can try out different strategies to test out "what if".