[Franek Grabowski]

Bill
I do not trust Galland simply because in my opinion he started to have some periods of his career blancoed. Various events, like visit on Sicily, development of Me 262, his relations with Goering are shown in completely different perspective by another sources.
I have no answer on actual impact of Allied straffing, but certainly I would not limit my knowledge to Galland or pilots' claims.
Graham
ORBs of Polish 2 TAF Mustang Squadrons show without doubt that they flew Ramrods (ie. dive bombings) on daily or almost daily basis during the Normandy Campaign. Due to superior range they flew a little bit farther than Spits or Tiffies. I suppose this was common to all 2 TAF Mustangs, though I cannot say for Americans.
In regard of Rommel's conflict with other commanders, Zetterling, based on German documents, suggests that Allied AFs did not cause any substantial losses or delays to the German army but Allied air superiority was a good excuse for incompetent German commanders. It is also his suggestion, that the command was right and if followed Rommel's sugestions, the army would have been destroyed by intense naval and aerial bombings on D-Day.
Olve
I do not think Luftwaffe achieved any goals at Dieppe, and I would hardly call this a Luftwaffe victory.
Cheers