ah wait, you present that suggesting that the Star Wars guys ripped it off from the other films...is there anything to back that up?
This keeps coming up, somebody takes a scene or character from a current movie and strongly suggests it was nicked from some classic.
Surely there is an alternative, in that there is a certain flow/makeup of scenes that 'people' in general find more compelling than others? So the Star Wars trench scene started as something, then was edited etc till it felt right. The Dambusters scene most likely went through the same process. Given both involve flying things in a line, there are bound to be similarities...as even though Tie fighters and X-Wings have no need to behave like WWII fighters, its easier for the creators and our believability that they do. Which means they are going to use the same manoeuvres, and have the same restrictions. They're both climatic sequences too, so both directors will be going for similar psychological responses (intentionally or just case it 'feels right') etc etc
I've no idea if anybody as studied this aspect of films, but tbh I find it more likely, than modern films painstakingly copying old scenes, that just seems a pain in the arse to do.