From my experience on higher difficult games, when enemy have thousands of planes then their detection in Europe will be always high. This command causes country AI to automatically accept any diplomatic offers, regardless of the case. Land | Doctrines Hearts of Iron IV Guide. It's a strong air mission, very cost efficient when it can be used. Base Strike The base strike bonus gives a +50% Base Strike buff. From the one I think is the weakest to the strongest. The tips provided in this military strategy guide should help get you well on your way to destroying the Allies and opening up the pathway for total world domination. Most Hearts of Iron IV players will agree that one of the hardest nations to successful invade and conquer is Britain due to her mighty navy and considerable air force.
That doctrine is also designed to preserve an air force with an assumption that you will be on the backfoot in the air war, which ironically makes it the best for winning the air war. The reason for this is the increased fighter detection which means it's easier for my aircraft to find enemy aircraft and engage them on favorable terms.
