Quote:
	
	
		| 
					Originally Posted by GuerraCivil  Of all USAAF fighter units in Europe the most efficient to my knowledge  was 56th FG and they flew with P-47 until the end of war. Perhaps speaks  something for the merit of P-47 that 56 FG kept flying with it although  "better" P-51 would have been available. 
 Although Mustang was  somewhat better technically (specially longer range) the P-47 Razorback  was essential in building up the self-confidence and combat experience  of USAAF fighter units during 1943 and early 1944 ...
 
 The P-51 was perhaps the best piston-engined  fighter of WW2 but USAAF had to have P-47 also!
 | 
	
 Hello GuerraCivil,
I think the 56th is an exception that proves the rule. The 56th was extremely experienced in the use of dive attack tactics which made best use of the Thunderbolt's high service ceiling and high diving speed, its two primary performance advantages.
The Mustang was not somewhat better than the P-47, but decisively so. It had lower drag and higher acceleration, contribution to substantially better overall manoeuvrability. Bill has discussed above the P-51s advantage in the dive.
I would strongly suggest that the USAAF did not, strictly speaking, need either the P-47 or P-51. The Lightning did encounter serious problems over Europe, but any long-range escort fighter was an insurmountable problem for the Luftwaffe, as the Tunisian campaign demonstrated.
Regards,
Paul