In fact, the first bomb dropped on D-Day was dropped by a 605 Sqn Mossie. No fighter in the strictest sense but many fighter-bombers really let loose....

And yes, I would refrain from Ambrose as a major source on D-Day as well. A great book (one of many) which touches upon the subject is OVERLORD, General Pete Quesada and the triumph of tactical Air Power in World War II

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"Facts are meaningless. You could use facts to prove anything that's even remotely true!" - Homer Simpson