US fighter bombers were certainly the terror of allied PoWs trekking westwards. My stepdaughter’s grandfather was a CAM pilot taken prisoner in a ditching in the Channel and he was far more frightened by USAAF ground attacks than by the idea of being shot off a catapault in mid Atlantic in winter out of range of land. They shot up anyone moving in a line or group. He saw lines of civilian refugees and PoWs attacked on several occasions. Just as my mother witnessed the Luftwaffe doing in her trek south in France in 1940.I know this is related to the army but really the lack of CAS doctrine in the RAF was a major flaw of early war British performance. That has to change - and frankly, it didn't get that much better over the course of the war, as it was US Fighter-Bombers that were the terror of NW Europe towards the end.
I think if there was a problem it was in close artillery support - the 25 pdrs in Africa were great but that took too long to become standard in use