From: Utopia Planitia Fleet Yards
Well seriously, if I am extracting the manual:
Air Superiority Group – 20 strength, only air unit that can intercept enemy air units
Ground Attack Group – 20 strength short-range attack aircraft, with escorts, that are most effective supporting land attacks or attacking naval groups
Tactical Air Group – 20 strength medium-range versatile aircraft, with escorts, that can perform all bombing missions with fair effectiveness
Strategic Air Group – 20 strength long-range aircraft, with long range escorts, that are primarily used to attack an enemy’s production
The "with escorts" for me is perhaps important to clarify. I am not sure the Allies did have fighters, in 1940, with enough range to escort a raid to Cologne, Dusseldorf or Essen...
Later in the manual, we have the "Default Values for Air Units" table at page 49 and Range value:
Air Superiority Group = 6 hexes
Ground Attack Group = 6 hexes
Tactical Air Group = 10 hexes
Strategic Air Group = 20 hexes
And, the small note that England and USA ground attack air group: +2 range
So, that is already 12 hexes range for a Tactical Air Group with escorts(?) and 22 hexes range for a Strategic Air Group with long range escorts(?).
Perhaps tuning down the ranges can be considered.
From Wikipedia, few ranges I have captured:
Stirling range = 3750 km
Wellington range = 3540 km
Lancaster range = 4073 km
P51 Mustang range = 1609 km
P47 Thunderbolt range = 1290 km
Supermarine Spitfire range = 720 km
Chancellor Gorkon to Captain James T. Kirk:
You don't trust me, do you? I don't blame you. If there is to be a brave new world, our generation is going to have the hardest time living in it.