I think in the correct order:
Overlord
Flight Unlimited (Civilian, never ran well)
Dawn Patrol Head to Head (WWI)
Red Baron II (WWI hated it)
Flying Corps (WWI)
Flying Corps Gold (WWI loved it)
European Air War (wonderful)
Rowan's Battle of Britain (great)
Mig Alley (Korea)
CFS 3? (eeargh)
IL2 series (simply the best)
Over Flanders Fields (atmospheric)
BoB WoV (dated)
Rise of Flight (not bad)
CLOD (
)
RedToo.