This is due to the large size of many regions and if an aircraft cannot reach from the airfield to the center on the zone and then to the battle point you suffer a massive operation penalty due to limited range. The winning side gives a stacking -1% stat penalty to enemy troops the more you control the sky max 50%.ДЇor me I only ever build heavy fighters. The Air Superority mission attack other fighters while the intercept option focuses on bombers and close air support aircraft.Д«oth sides with engage while the enemy have fighter aircraft in the area. When assigned you have to turn on the missions you want and time of day to operate. On the right side you see the aircraft at the airbase and on the left is the aircraft in the region. If you capture or lose an airfield all aircraft are move to another friendly airfield nearby.Дўnd) Fighters and Heavy Fighters can control the sky in any region where there is an airbase with friendy aircraft. For ease of life Tier 3 Heavy Fighters with max range upgrades can ignore this in most regions. Always use the once as close to the center as possible.

But note that airfields closer to enemy lines are bad since they need to travel to the center of the airzone before acting. Aircraft assigned here can be asigned to the region they are in by default by moving them to the window on the right or dragging them into a nearby airzone such as over water for naval bombers to attack ships. Ranked from level 1 with room for 200 aircraft to 10 with room for 2000. There is also no notice to where a new airfield is built to know where it will be.ДЎst) Airfields are mostly built around the world but are limited in size. It does not make any sense to why its like that but you just have to live with it.

Click the aircraft symbol in the bottom right to view the air zone map. Starting at the Top with Aircraft and Air Supremancy. While the wiki will have tons more information then what I can post here I will provide what information I can.

Hearts of iron 4 forums