Is there any definitive 'best' way to defend the coastline after the fall of France? I've tried all sorts of setups, from garrisons or militia in every province, to stronger divisions in the ports or the whole coast, with or without fortresses. Obviously the stronger the garrisons, the more wasted supply and it seems the most the can ever hope to do is just delay any landing. I'm thinking perhaps it's best to have a strong infantry/artillery division in each port and nothing in the other provinces, and then a few fast armour corps inland ready to push the invasion back into the sea (kinda what the Germans had planned for D-Day, but didn't they have the entire coastline heavily defended?).
Am I right in thinking an undefended port is easier/faster to defend?
Am I right in thinking an undefended port is easier/faster to defend?