Carriers are vitally important to fleets in HoI4: if you don’t want to build any of your own, you should still plan to specifically target and kill enemy carriers. As of the most recent patch, fleets with the Carrier Air advantage impose positioning penalties on the opposing fleet as wel...
because destroyers will not automatically flee the second a small enemy force appears (Note:thanks to Rimmy for pointing this out in his HOI4 video!). This will hopefully not be true forever, but keep this in mind for the near future. ...