So now unable to find a shred of support for your slander, you shoot down the historical source. Ratzinger was sent to defend a BMW plant and there isn’t anything to say he shot at allied aircraft. What you have is a theological Einstein as TIME magazine called BXVI. The rest as all third rate sophomoric and mostly Lilliputian protestant writers.
It appears (though I can’t be certain since I’m not a mind reader) that you have not read Ratzinger’s autobiography.
I suggest you do so before you make pronouncements on other people’s veracity (unless you think Ratzinger is a liar.)