Shortround6
Major General
I dont think there were nearly as many units equipped with Spitfires and P-38s as there were P-40s. P-40 units learned what to do what not to do when taking on various enemy types.
One of the things they learned to do was stay low and let somebody else fight at higher altitudes.
I disagree
The Most important jobs for a fighter unit were to stop enemy recon planes and enemy bombers from executing their own TAS missions. Next was making sure friendly bomber units could complete their missions as much as possible. It doesn't do much for the war effort if twin engine bombers that can carry 1000-3000lb bomb loads are sitting on air fields while "fighters" are attacking the enemy with 250-500lb bomb loads. If you have enough fighters to stop a fair percentage of the enemy missions AND escort your own tactical bombers to keep the enemy form shooting down too many of them THEN the fighters can play TAS or CAS to their hearts content.
Its a well documented fact that P-40 units were quite capable of successfully defending themselves or attacking enemy formations. Experience taught them what they could and could not get away with when taking on different enemy types just as it did in the PTO CBI with F4Fs, etc.
I think you are missing the point here. P-40s were capable of "defending themselves" but only by dropping the bombs (just like any other fighter bomber) which means the CAS strike is defeated until the P-40s (or another squadron/group) can rearm and try the mission again. having a better performing fighter fly as "top cover" means the enemy does not get to bounce from above or has to tangle with the top cover first and the TAS planes may get to actually bomb the target that day.
you may want to try seeing which enemy formations the P-40s attacked. Bombers and transports or Bf 109s at altitude? Flying at low level and letting the enemy fly above you doesn't usually work real well. It gives the initiative to the enemy. You cannot attack him, ( by the time you climb he is gone if he wants to be) but he can decide to attack you ( has the advantage of diving down) or not if it looks the the numbers are wrong or there is another disadvantage. Letting the enemy pick and choose the fights is a sure way to have a less then favorable kill to loss ratio. The P-40 could not force the fight as well as the Spitfire and P-38. Doesn't mean it didn't do good work or couldn't defend itself but defending itself is not defending bombers or intercepting enemy missions.